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Finding the Fourth Proportional to 378,471.11, 567,816.25 and 112,238.04

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Solution

The fourth proportional to 378,471.11, 567,816.25 and 112,238.04 is: 168,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,471.11 : 567,816.25 = 112,238.04 : x
  2. Step 2: Convert to fraction form
    378,471.11/567,816.25 = 112,238.04/x
  3. Step 3: Cross multiply
    378,471.11x = 567,816.25 × 112,238.04
  4. Step 4: Simplify right side
    378,471.11x = 63,730,580,780.69
  5. Step 5: Solve for x
    x = 63,730,580,780.69/378,471.11
  6. Step 6: Final answer
    x = 168,389.55

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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.