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Finding the Fourth Proportional to 484,721.61, 727,414.61 and 169,178.51

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Solution

The fourth proportional to 484,721.61, 727,414.61 and 169,178.51 is: 253,883.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,721.61 : 727,414.61 = 169,178.51 : x
  2. Step 2: Convert to fraction form
    484,721.61/727,414.61 = 169,178.51/x
  3. Step 3: Cross multiply
    484,721.61x = 727,414.61 × 169,178.51
  4. Step 4: Simplify right side
    484,721.61x = 123,062,919,872.03
  5. Step 5: Solve for x
    x = 123,062,919,872.03/484,721.61
  6. Step 6: Final answer
    x = 253,883.71

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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.