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Finding the Fourth Proportional to 62,638.78, 86,446.92 and 34,349.92

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Solution

The fourth proportional to 62,638.78, 86,446.92 and 34,349.92 is: 47,405.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,638.78 : 86,446.92 = 34,349.92 : x
  2. Step 2: Convert to fraction form
    62,638.78/86,446.92 = 34,349.92/x
  3. Step 3: Cross multiply
    62,638.78x = 86,446.92 × 34,349.92
  4. Step 4: Simplify right side
    62,638.78x = 2,969,444,786.25
  5. Step 5: Solve for x
    x = 2,969,444,786.25/62,638.78
  6. Step 6: Final answer
    x = 47,405.85

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1.5x scale

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.