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Finding the Fourth Proportional to 677,792.88, 935,346.49 and 391,306.82

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Solution

The fourth proportional to 677,792.88, 935,346.49 and 391,306.82 is: 539,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,792.88 : 935,346.49 = 391,306.82 : x
  2. Step 2: Convert to fraction form
    677,792.88/935,346.49 = 391,306.82/x
  3. Step 3: Cross multiply
    677,792.88x = 935,346.49 × 391,306.82
  4. Step 4: Simplify right side
    677,792.88x = 366,007,454,945.06
  5. Step 5: Solve for x
    x = 366,007,454,945.06/677,792.88
  6. Step 6: Final answer
    x = 539,998.97

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1.5x scale

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.