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Finding the Fourth Proportional to 74,425.39, 102,716 and 42,593.61

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Solution

The fourth proportional to 74,425.39, 102,716 and 42,593.61 is: 58,784.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,425.39 : 102,716 = 42,593.61 : x
  2. Step 2: Convert to fraction form
    74,425.39/102,716 = 42,593.61/x
  3. Step 3: Cross multiply
    74,425.39x = 102,716 × 42,593.61
  4. Step 4: Simplify right side
    74,425.39x = 4,375,045,244.76
  5. Step 5: Solve for x
    x = 4,375,045,244.76/74,425.39
  6. Step 6: Final answer
    x = 58,784.31

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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.