Home / 19,890,999.60-29,836,499.40-7,111,921.20

Finding the Fourth Proportional to 19,890,999.60, 29,836,499.40 and 7,111,921.20

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Solution

The fourth proportional to 19,890,999.60, 29,836,499.40 and 7,111,921.20 is: 10,667,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890,999.60 : 29,836,499.40 = 7,111,921.20 : x
  2. Step 2: Convert to fraction form
    19,890,999.60/29,836,499.40 = 7,111,921.20/x
  3. Step 3: Cross multiply
    19,890,999.60x = 29,836,499.40 × 7,111,921.20
  4. Step 4: Simplify right side
    19,890,999.60x = 212,194,832,616,647.28
  5. Step 5: Solve for x
    x = 212,194,832,616,647.28/19,890,999.60
  6. Step 6: Final answer
    x = 10,667,881.80

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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.