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Finding the Fourth Proportional to 261,134.82, 391,675.50 and 83,769.12

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Solution

The fourth proportional to 261,134.82, 391,675.50 and 83,769.12 is: 125,645.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,134.82 : 391,675.50 = 83,769.12 : x
  2. Step 2: Convert to fraction form
    261,134.82/391,675.50 = 83,769.12/x
  3. Step 3: Cross multiply
    261,134.82x = 391,675.50 × 83,769.12
  4. Step 4: Simplify right side
    261,134.82x = 32,810,311,960.56
  5. Step 5: Solve for x
    x = 32,810,311,960.56/261,134.82
  6. Step 6: Final answer
    x = 125,645.11

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1.5x scale

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.