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Finding the Fourth Proportional to 125,355.29, 173,002.12 and 71,629.88

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Solution

The fourth proportional to 125,355.29, 173,002.12 and 71,629.88 is: 98,855.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,355.29 : 173,002.12 = 71,629.88 : x
  2. Step 2: Convert to fraction form
    125,355.29/173,002.12 = 71,629.88/x
  3. Step 3: Cross multiply
    125,355.29x = 173,002.12 × 71,629.88
  4. Step 4: Simplify right side
    125,355.29x = 12,392,120,051.26
  5. Step 5: Solve for x
    x = 12,392,120,051.26/125,355.29
  6. Step 6: Final answer
    x = 98,855.98

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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.