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Finding the Fourth Proportional to 169,115.52, 253,489.86 and 84,672.03

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Solution

The fourth proportional to 169,115.52, 253,489.86 and 84,672.03 is: 126,916.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,115.52 : 253,489.86 = 84,672.03 : x
  2. Step 2: Convert to fraction form
    169,115.52/253,489.86 = 84,672.03/x
  3. Step 3: Cross multiply
    169,115.52x = 253,489.86 × 84,672.03
  4. Step 4: Simplify right side
    169,115.52x = 21,463,501,030.62
  5. Step 5: Solve for x
    x = 21,463,501,030.62/169,115.52
  6. Step 6: Final answer
    x = 126,916.21

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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.