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Finding the Fourth Proportional to 62,987.48, 86,920.94 and 34,306.49

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Solution

The fourth proportional to 62,987.48, 86,920.94 and 34,306.49 is: 47,341.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,987.48 : 86,920.94 = 34,306.49 : x
  2. Step 2: Convert to fraction form
    62,987.48/86,920.94 = 34,306.49/x
  3. Step 3: Cross multiply
    62,987.48x = 86,920.94 × 34,306.49
  4. Step 4: Simplify right side
    62,987.48x = 2,981,951,752.76
  5. Step 5: Solve for x
    x = 2,981,951,752.76/62,987.48
  6. Step 6: Final answer
    x = 47,341.98

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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.