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Finding the Fourth Proportional to 261,571.52, 391,800.40 and 197,687.92

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Solution

The fourth proportional to 261,571.52, 391,800.40 and 197,687.92 is: 296,111.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,571.52 : 391,800.40 = 197,687.92 : x
  2. Step 2: Convert to fraction form
    261,571.52/391,800.40 = 197,687.92/x
  3. Step 3: Cross multiply
    261,571.52x = 391,800.40 × 197,687.92
  4. Step 4: Simplify right side
    261,571.52x = 77,454,206,131.17
  5. Step 5: Solve for x
    x = 77,454,206,131.17/261,571.52
  6. Step 6: Final answer
    x = 296,111.01

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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.