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Finding the Fourth Proportional to 125,394.34, 173,044.16 and 71,680.52

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Solution

The fourth proportional to 125,394.34, 173,044.16 and 71,680.52 is: 98,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,394.34 : 173,044.16 = 71,680.52 : x
  2. Step 2: Convert to fraction form
    125,394.34/173,044.16 = 71,680.52/x
  3. Step 3: Cross multiply
    125,394.34x = 173,044.16 × 71,680.52
  4. Step 4: Simplify right side
    125,394.34x = 12,403,895,371.76
  5. Step 5: Solve for x
    x = 12,403,895,371.76/125,394.34
  6. Step 6: Final answer
    x = 98,919.10

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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.