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Finding the Fourth Proportional to 678,057.57, 935,763.18 and 376,251.57

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Solution

The fourth proportional to 678,057.57, 935,763.18 and 376,251.57 is: 519,251.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,057.57 : 935,763.18 = 376,251.57 : x
  2. Step 2: Convert to fraction form
    678,057.57/935,763.18 = 376,251.57/x
  3. Step 3: Cross multiply
    678,057.57x = 935,763.18 × 376,251.57
  4. Step 4: Simplify right side
    678,057.57x = 352,082,365,623.19
  5. Step 5: Solve for x
    x = 352,082,365,623.19/678,057.57
  6. Step 6: Final answer
    x = 519,251.43

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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.