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Finding the Fourth Proportional to 124,881.69, 187,280.16 and 40,620.96

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Solution

The fourth proportional to 124,881.69, 187,280.16 and 40,620.96 is: 60,917.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,881.69 : 187,280.16 = 40,620.96 : x
  2. Step 2: Convert to fraction form
    124,881.69/187,280.16 = 40,620.96/x
  3. Step 3: Cross multiply
    124,881.69x = 187,280.16 × 40,620.96
  4. Step 4: Simplify right side
    124,881.69x = 7,607,500,159.43
  5. Step 5: Solve for x
    x = 7,607,500,159.43/124,881.69
  6. Step 6: Final answer
    x = 60,917.66

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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.