Home / 12,692,111.20-19,038,166.80-12,139,237.60

Finding the Fourth Proportional to 12,692,111.20, 19,038,166.80 and 12,139,237.60

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Solution

The fourth proportional to 12,692,111.20, 19,038,166.80 and 12,139,237.60 is: 18,208,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692,111.20 : 19,038,166.80 = 12,139,237.60 : x
  2. Step 2: Convert to fraction form
    12,692,111.20/19,038,166.80 = 12,139,237.60/x
  3. Step 3: Cross multiply
    12,692,111.20x = 19,038,166.80 × 12,139,237.60
  4. Step 4: Simplify right side
    12,692,111.20x = 231,108,830,253,631.69
  5. Step 5: Solve for x
    x = 231,108,830,253,631.69/12,692,111.20
  6. Step 6: Final answer
    x = 18,208,856.40

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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.