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Finding the Fourth Proportional to 123,713.20, 185,488.80 and 48,788.20

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Solution

The fourth proportional to 123,713.20, 185,488.80 and 48,788.20 is: 73,150.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,713.20 : 185,488.80 = 48,788.20 : x
  2. Step 2: Convert to fraction form
    123,713.20/185,488.80 = 48,788.20/x
  3. Step 3: Cross multiply
    123,713.20x = 185,488.80 × 48,788.20
  4. Step 4: Simplify right side
    123,713.20x = 9,049,664,672.16
  5. Step 5: Solve for x
    x = 9,049,664,672.16/123,713.20
  6. Step 6: Final answer
    x = 73,150.36

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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.