Home / 12,686,977,220.40-19,030,465,830.60-7,727,994,961.20

Finding the Fourth Proportional to 12,686,977,220.40, 19,030,465,830.60 and 7,727,994,961.20

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Solution

The fourth proportional to 12,686,977,220.40, 19,030,465,830.60 and 7,727,994,961.20 is: 11,591,992,441.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686,977,220.40 : 19,030,465,830.60 = 7,727,994,961.20 : x
  2. Step 2: Convert to fraction form
    12,686,977,220.40/19,030,465,830.60 = 7,727,994,961.20/x
  3. Step 3: Cross multiply
    12,686,977,220.40x = 19,030,465,830.60 × 7,727,994,961.20
  4. Step 4: Simplify right side
    12,686,977,220.40x = 147,067,344,048,165,552,128
  5. Step 5: Solve for x
    x = 147,067,344,048,165,552,128/12,686,977,220.40
  6. Step 6: Final answer
    x = 11,591,992,441.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.