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Finding the Fourth Proportional to 63,390.87, 87,480.74 and 34,711.74

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Solution

The fourth proportional to 63,390.87, 87,480.74 and 34,711.74 is: 47,902.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,390.87 : 87,480.74 = 34,711.74 : x
  2. Step 2: Convert to fraction form
    63,390.87/87,480.74 = 34,711.74/x
  3. Step 3: Cross multiply
    63,390.87x = 87,480.74 × 34,711.74
  4. Step 4: Simplify right side
    63,390.87x = 3,036,608,788.67
  5. Step 5: Solve for x
    x = 3,036,608,788.67/63,390.87
  6. Step 6: Final answer
    x = 47,902.94

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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.