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Finding the Fourth Proportional to 543,187.68, 814,687.56 and 143,834.19

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Solution

The fourth proportional to 543,187.68, 814,687.56 and 143,834.19 is: 215,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,187.68 : 814,687.56 = 143,834.19 : x
  2. Step 2: Convert to fraction form
    543,187.68/814,687.56 = 143,834.19/x
  3. Step 3: Cross multiply
    543,187.68x = 814,687.56 × 143,834.19
  4. Step 4: Simplify right side
    543,187.68x = 117,179,925,295.68
  5. Step 5: Solve for x
    x = 117,179,925,295.68/543,187.68
  6. Step 6: Final answer
    x = 215,726.40

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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.