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Finding the Fourth Proportional to 74,691.65, 103,074.48 and 40,700.14

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Solution

The fourth proportional to 74,691.65, 103,074.48 and 40,700.14 is: 56,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,691.65 : 103,074.48 = 40,700.14 : x
  2. Step 2: Convert to fraction form
    74,691.65/103,074.48 = 40,700.14/x
  3. Step 3: Cross multiply
    74,691.65x = 103,074.48 × 40,700.14
  4. Step 4: Simplify right side
    74,691.65x = 4,195,145,251.05
  5. Step 5: Solve for x
    x = 4,195,145,251.05/74,691.65
  6. Step 6: Final answer
    x = 56,166.19

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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.