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Finding the Fourth Proportional to 392,715.18, 541,932.74 and 240,008.82

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Solution

The fourth proportional to 392,715.18, 541,932.74 and 240,008.82 is: 331,203.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,715.18 : 541,932.74 = 240,008.82 : x
  2. Step 2: Convert to fraction form
    392,715.18/541,932.74 = 240,008.82/x
  3. Step 3: Cross multiply
    392,715.18x = 541,932.74 × 240,008.82
  4. Step 4: Simplify right side
    392,715.18x = 130,068,637,446.77
  5. Step 5: Solve for x
    x = 130,068,637,446.77/392,715.18
  6. Step 6: Final answer
    x = 331,203.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.