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Finding the Fourth Proportional to 124,876.60, 187,314.90 and 40,644.70

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Solution

The fourth proportional to 124,876.60, 187,314.90 and 40,644.70 is: 60,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,876.60 : 187,314.90 = 40,644.70 : x
  2. Step 2: Convert to fraction form
    124,876.60/187,314.90 = 40,644.70/x
  3. Step 3: Cross multiply
    124,876.60x = 187,314.90 × 40,644.70
  4. Step 4: Simplify right side
    124,876.60x = 7,613,357,916.03
  5. Step 5: Solve for x
    x = 7,613,357,916.03/124,876.60
  6. Step 6: Final answer
    x = 60,967.05

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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.