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Finding the Fourth Proportional to 71,911.32, 107,903.36 and 48,488.52

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Solution

The fourth proportional to 71,911.32, 107,903.36 and 48,488.52 is: 72,757.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,911.32 : 107,903.36 = 48,488.52 : x
  2. Step 2: Convert to fraction form
    71,911.32/107,903.36 = 48,488.52/x
  3. Step 3: Cross multiply
    71,911.32x = 107,903.36 × 48,488.52
  4. Step 4: Simplify right side
    71,911.32x = 5,232,074,229.43
  5. Step 5: Solve for x
    x = 5,232,074,229.43/71,911.32
  6. Step 6: Final answer
    x = 72,757.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.