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Finding the Fourth Proportional to 63,586.80, 87,747.36 and 34,907.28

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Solution

The fourth proportional to 63,586.80, 87,747.36 and 34,907.28 is: 48,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,586.80 : 87,747.36 = 34,907.28 : x
  2. Step 2: Convert to fraction form
    63,586.80/87,747.36 = 34,907.28/x
  3. Step 3: Cross multiply
    63,586.80x = 87,747.36 × 34,907.28
  4. Step 4: Simplify right side
    63,586.80x = 3,063,021,664.78
  5. Step 5: Solve for x
    x = 3,063,021,664.78/63,586.80
  6. Step 6: Final answer
    x = 48,170.72

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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.