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Finding the Fourth Proportional to 61,348.82, 84,660.86 and 38,702.43

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Solution

The fourth proportional to 61,348.82, 84,660.86 and 38,702.43 is: 53,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,348.82 : 84,660.86 = 38,702.43 : x
  2. Step 2: Convert to fraction form
    61,348.82/84,660.86 = 38,702.43/x
  3. Step 3: Cross multiply
    61,348.82x = 84,660.86 × 38,702.43
  4. Step 4: Simplify right side
    61,348.82x = 3,276,581,104.65
  5. Step 5: Solve for x
    x = 3,276,581,104.65/61,348.82
  6. Step 6: Final answer
    x = 53,409.04

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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.