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Finding the Fourth Proportional to 261,097.38, 391,673.34 and 111,353.49

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Solution

The fourth proportional to 261,097.38, 391,673.34 and 111,353.49 is: 167,041.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,097.38 : 391,673.34 = 111,353.49 : x
  2. Step 2: Convert to fraction form
    261,097.38/391,673.34 = 111,353.49/x
  3. Step 3: Cross multiply
    261,097.38x = 391,673.34 × 111,353.49
  4. Step 4: Simplify right side
    261,097.38x = 43,614,193,348.96
  5. Step 5: Solve for x
    x = 43,614,193,348.96/261,097.38
  6. Step 6: Final answer
    x = 167,041.87

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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.