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Finding the Fourth Proportional to 52,609.79, 78,949.21 and 19,330.13

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Solution

The fourth proportional to 52,609.79, 78,949.21 and 19,330.13 is: 29,007.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,609.79 : 78,949.21 = 19,330.13 : x
  2. Step 2: Convert to fraction form
    52,609.79/78,949.21 = 19,330.13/x
  3. Step 3: Cross multiply
    52,609.79x = 78,949.21 × 19,330.13
  4. Step 4: Simplify right side
    52,609.79x = 1,526,098,492.70
  5. Step 5: Solve for x
    x = 1,526,098,492.70/52,609.79
  6. Step 6: Final answer
    x = 29,007.88

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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.