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Finding the Fourth Proportional to 217,672.41, 326,592.45 and 84,646.38

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Solution

The fourth proportional to 217,672.41, 326,592.45 and 84,646.38 is: 127,002.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,672.41 : 326,592.45 = 84,646.38 : x
  2. Step 2: Convert to fraction form
    217,672.41/326,592.45 = 84,646.38/x
  3. Step 3: Cross multiply
    217,672.41x = 326,592.45 × 84,646.38
  4. Step 4: Simplify right side
    217,672.41x = 27,644,868,627.83
  5. Step 5: Solve for x
    x = 27,644,868,627.83/217,672.41
  6. Step 6: Final answer
    x = 127,002.17

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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.