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Finding the Fourth Proportional to 217,712.92, 326,590.02 and 84,603.46

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Solution

The fourth proportional to 217,712.92, 326,590.02 and 84,603.46 is: 126,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,712.92 : 326,590.02 = 84,603.46 : x
  2. Step 2: Convert to fraction form
    217,712.92/326,590.02 = 84,603.46/x
  3. Step 3: Cross multiply
    217,712.92x = 326,590.02 × 84,603.46
  4. Step 4: Simplify right side
    217,712.92x = 27,630,645,693.47
  5. Step 5: Solve for x
    x = 27,630,645,693.47/217,712.92
  6. Step 6: Final answer
    x = 126,913.21

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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.