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Finding the Fourth Proportional to 261,047.93, 391,620.90 and 83,507.27

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Solution

The fourth proportional to 261,047.93, 391,620.90 and 83,507.27 is: 125,276.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,047.93 : 391,620.90 = 83,507.27 : x
  2. Step 2: Convert to fraction form
    261,047.93/391,620.90 = 83,507.27/x
  3. Step 3: Cross multiply
    261,047.93x = 391,620.90 × 83,507.27
  4. Step 4: Simplify right side
    261,047.93x = 32,703,192,233.94
  5. Step 5: Solve for x
    x = 32,703,192,233.94/261,047.93
  6. Step 6: Final answer
    x = 125,276.58

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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.