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Finding the Fourth Proportional to 124,894.73, 187,389.14 and 75,009.61

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Solution

The fourth proportional to 124,894.73, 187,389.14 and 75,009.61 is: 112,542.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,894.73 : 187,389.14 = 75,009.61 : x
  2. Step 2: Convert to fraction form
    124,894.73/187,389.14 = 75,009.61/x
  3. Step 3: Cross multiply
    124,894.73x = 187,389.14 × 75,009.61
  4. Step 4: Simplify right side
    124,894.73x = 14,055,984,997.64
  5. Step 5: Solve for x
    x = 14,055,984,997.64/124,894.73
  6. Step 6: Final answer
    x = 112,542.66

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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.