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Finding the Fourth Proportional to 261,363.44, 391,998.24 and 69,239.12

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Solution

The fourth proportional to 261,363.44, 391,998.24 and 69,239.12 is: 103,846.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,363.44 : 391,998.24 = 69,239.12 : x
  2. Step 2: Convert to fraction form
    261,363.44/391,998.24 = 69,239.12/x
  3. Step 3: Cross multiply
    261,363.44x = 391,998.24 × 69,239.12
  4. Step 4: Simplify right side
    261,363.44x = 27,141,613,179.15
  5. Step 5: Solve for x
    x = 27,141,613,179.15/261,363.44
  6. Step 6: Final answer
    x = 103,846.25

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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.