Home / 83,618,780.20-125,428,170.30-66,400,091.80

Finding the Fourth Proportional to 83,618,780.20, 125,428,170.30 and 66,400,091.80

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Solution

The fourth proportional to 83,618,780.20, 125,428,170.30 and 66,400,091.80 is: 99,600,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,618,780.20 : 125,428,170.30 = 66,400,091.80 : x
  2. Step 2: Convert to fraction form
    83,618,780.20/125,428,170.30 = 66,400,091.80/x
  3. Step 3: Cross multiply
    83,618,780.20x = 125,428,170.30 × 66,400,091.80
  4. Step 4: Simplify right side
    83,618,780.20x = 8,328,442,022,226,033
  5. Step 5: Solve for x
    x = 8,328,442,022,226,033/83,618,780.20
  6. Step 6: Final answer
    x = 99,600,137.70

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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.