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Finding the Fourth Proportional to 361,603.70, 542,405.55 and 124,925.30

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Solution

The fourth proportional to 361,603.70, 542,405.55 and 124,925.30 is: 187,387.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,603.70 : 542,405.55 = 124,925.30 : x
  2. Step 2: Convert to fraction form
    361,603.70/542,405.55 = 124,925.30/x
  3. Step 3: Cross multiply
    361,603.70x = 542,405.55 × 124,925.30
  4. Step 4: Simplify right side
    361,603.70x = 67,760,176,055.42
  5. Step 5: Solve for x
    x = 67,760,176,055.42/361,603.70
  6. Step 6: Final answer
    x = 187,387.95

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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.