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Finding the Fourth Proportional to 217,156.43, 325,654.59 and 74,965.52

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Solution

The fourth proportional to 217,156.43, 325,654.59 and 74,965.52 is: 112,420.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,156.43 : 325,654.59 = 74,965.52 : x
  2. Step 2: Convert to fraction form
    217,156.43/325,654.59 = 74,965.52/x
  3. Step 3: Cross multiply
    217,156.43x = 325,654.59 × 74,965.52
  4. Step 4: Simplify right side
    217,156.43x = 24,412,866,774.99
  5. Step 5: Solve for x
    x = 24,412,866,774.99/217,156.43
  6. Step 6: Final answer
    x = 112,420.65

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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.