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Finding the Fourth Proportional to 61,502.76, 84,874.14 and 34,645.80

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Solution

The fourth proportional to 61,502.76, 84,874.14 and 34,645.80 is: 47,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,502.76 : 84,874.14 = 34,645.80 : x
  2. Step 2: Convert to fraction form
    61,502.76/84,874.14 = 34,645.80/x
  3. Step 3: Cross multiply
    61,502.76x = 84,874.14 × 34,645.80
  4. Step 4: Simplify right side
    61,502.76x = 2,940,532,479.61
  5. Step 5: Solve for x
    x = 2,940,532,479.61/61,502.76
  6. Step 6: Final answer
    x = 47,811.39

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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.