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Finding the Fourth Proportional to 576,956.50, 865,471.66 and 221,970.56

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Solution

The fourth proportional to 576,956.50, 865,471.66 and 221,970.56 is: 332,970.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,956.50 : 865,471.66 = 221,970.56 : x
  2. Step 2: Convert to fraction form
    576,956.50/865,471.66 = 221,970.56/x
  3. Step 3: Cross multiply
    576,956.50x = 865,471.66 × 221,970.56
  4. Step 4: Simplify right side
    576,956.50x = 192,109,229,034.33
  5. Step 5: Solve for x
    x = 192,109,229,034.33/576,956.50
  6. Step 6: Final answer
    x = 332,970.04

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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.