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Finding the Fourth Proportional to 472,087.13, 708,339.98 and 247,394.15

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Solution

The fourth proportional to 472,087.13, 708,339.98 and 247,394.15 is: 371,200.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,087.13 : 708,339.98 = 247,394.15 : x
  2. Step 2: Convert to fraction form
    472,087.13/708,339.98 = 247,394.15/x
  3. Step 3: Cross multiply
    472,087.13x = 708,339.98 × 247,394.15
  4. Step 4: Simplify right side
    472,087.13x = 175,239,164,339.90
  5. Step 5: Solve for x
    x = 175,239,164,339.90/472,087.13
  6. Step 6: Final answer
    x = 371,200.89

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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.