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Finding the Fourth Proportional to 169,468.47, 253,892.88 and 79,345.85

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Solution

The fourth proportional to 169,468.47, 253,892.88 and 79,345.85 is: 118,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,468.47 : 253,892.88 = 79,345.85 : x
  2. Step 2: Convert to fraction form
    169,468.47/253,892.88 = 79,345.85/x
  3. Step 3: Cross multiply
    169,468.47x = 253,892.88 × 79,345.85
  4. Step 4: Simplify right side
    169,468.47x = 20,145,346,372.55
  5. Step 5: Solve for x
    x = 20,145,346,372.55/169,468.47
  6. Step 6: Final answer
    x = 118,873.71

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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.