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Finding the Fourth Proportional to 52,139.52, 78,209.04 and 14,699.52

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Solution

The fourth proportional to 52,139.52, 78,209.04 and 14,699.52 is: 22,049.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,139.52 : 78,209.04 = 14,699.52 : x
  2. Step 2: Convert to fraction form
    52,139.52/78,209.04 = 14,699.52/x
  3. Step 3: Cross multiply
    52,139.52x = 78,209.04 × 14,699.52
  4. Step 4: Simplify right side
    52,139.52x = 1,149,635,347.66
  5. Step 5: Solve for x
    x = 1,149,635,347.66/52,139.52
  6. Step 6: Final answer
    x = 22,049.21

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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.