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Finding the Fourth Proportional to 53,149.52, 79,732.92 and 18,085.52

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Solution

The fourth proportional to 53,149.52, 79,732.92 and 18,085.52 is: 27,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,149.52 : 79,732.92 = 18,085.52 : x
  2. Step 2: Convert to fraction form
    53,149.52/79,732.92 = 18,085.52/x
  3. Step 3: Cross multiply
    53,149.52x = 79,732.92 × 18,085.52
  4. Step 4: Simplify right side
    53,149.52x = 1,442,011,319.32
  5. Step 5: Solve for x
    x = 1,442,011,319.32/53,149.52
  6. Step 6: Final answer
    x = 27,131.22

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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.