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Finding the Fourth Proportional to 498,335.11, 687,658.31 and 277,555.56

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Solution

The fourth proportional to 498,335.11, 687,658.31 and 277,555.56 is: 383,002.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,335.11 : 687,658.31 = 277,555.56 : x
  2. Step 2: Convert to fraction form
    498,335.11/687,658.31 = 277,555.56/x
  3. Step 3: Cross multiply
    498,335.11x = 687,658.31 × 277,555.56
  4. Step 4: Simplify right side
    498,335.11x = 190,863,385,338.61
  5. Step 5: Solve for x
    x = 190,863,385,338.61/498,335.11
  6. Step 6: Final answer
    x = 383,002.08

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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.