Home / 39,138,610.60-58,707,915.90-20,998,757.80

Finding the Fourth Proportional to 39,138,610.60, 58,707,915.90 and 20,998,757.80

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Solution

The fourth proportional to 39,138,610.60, 58,707,915.90 and 20,998,757.80 is: 31,498,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138,610.60 : 58,707,915.90 = 20,998,757.80 : x
  2. Step 2: Convert to fraction form
    39,138,610.60/58,707,915.90 = 20,998,757.80/x
  3. Step 3: Cross multiply
    39,138,610.60x = 58,707,915.90 × 20,998,757.80
  4. Step 4: Simplify right side
    39,138,610.60x = 1,232,793,306,926,869
  5. Step 5: Solve for x
    x = 1,232,793,306,926,869/39,138,610.60
  6. Step 6: Final answer
    x = 31,498,136.70

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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.