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Finding the Fourth Proportional to 71,762.76, 99,060.17 and 53,909.55

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Solution

The fourth proportional to 71,762.76, 99,060.17 and 53,909.55 is: 74,415.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,762.76 : 99,060.17 = 53,909.55 : x
  2. Step 2: Convert to fraction form
    71,762.76/99,060.17 = 53,909.55/x
  3. Step 3: Cross multiply
    71,762.76x = 99,060.17 × 53,909.55
  4. Step 4: Simplify right side
    71,762.76x = 5,340,288,918.08
  5. Step 5: Solve for x
    x = 5,340,288,918.08/71,762.76
  6. Step 6: Final answer
    x = 74,415.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.