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Finding the Fourth Proportional to 63,419.76, 87,505.92 and 38,264.40

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Solution

The fourth proportional to 63,419.76, 87,505.92 and 38,264.40 is: 52,796.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,419.76 : 87,505.92 = 38,264.40 : x
  2. Step 2: Convert to fraction form
    63,419.76/87,505.92 = 38,264.40/x
  3. Step 3: Cross multiply
    63,419.76x = 87,505.92 × 38,264.40
  4. Step 4: Simplify right side
    63,419.76x = 3,348,361,525.25
  5. Step 5: Solve for x
    x = 3,348,361,525.25/63,419.76
  6. Step 6: Final answer
    x = 52,796.82

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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.