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Finding the Fourth Proportional to 124,963.48, 187,400.94 and 40,700.80

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Solution

The fourth proportional to 124,963.48, 187,400.94 and 40,700.80 is: 61,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,963.48 : 187,400.94 = 40,700.80 : x
  2. Step 2: Convert to fraction form
    124,963.48/187,400.94 = 40,700.80/x
  3. Step 3: Cross multiply
    124,963.48x = 187,400.94 × 40,700.80
  4. Step 4: Simplify right side
    124,963.48x = 7,627,368,178.75
  5. Step 5: Solve for x
    x = 7,627,368,178.75/124,963.48
  6. Step 6: Final answer
    x = 61,036.78

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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.