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Finding the Fourth Proportional to 125,170.92, 172,751.94 and 71,443.62

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Solution

The fourth proportional to 125,170.92, 172,751.94 and 71,443.62 is: 98,601.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,170.92 : 172,751.94 = 71,443.62 : x
  2. Step 2: Convert to fraction form
    125,170.92/172,751.94 = 71,443.62/x
  3. Step 3: Cross multiply
    125,170.92x = 172,751.94 × 71,443.62
  4. Step 4: Simplify right side
    125,170.92x = 12,342,023,955.62
  5. Step 5: Solve for x
    x = 12,342,023,955.62/125,170.92
  6. Step 6: Final answer
    x = 98,601.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.