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Finding the Fourth Proportional to 125,207.26, 187,751.49 and 72,632.86

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Solution

The fourth proportional to 125,207.26, 187,751.49 and 72,632.86 is: 108,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,207.26 : 187,751.49 = 72,632.86 : x
  2. Step 2: Convert to fraction form
    125,207.26/187,751.49 = 72,632.86/x
  3. Step 3: Cross multiply
    125,207.26x = 187,751.49 × 72,632.86
  4. Step 4: Simplify right side
    125,207.26x = 13,636,927,687.96
  5. Step 5: Solve for x
    x = 13,636,927,687.96/125,207.26
  6. Step 6: Final answer
    x = 108,914.83

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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.