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Finding the Fourth Proportional to 69,400.95, 95,775.03 and 39,186.71

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Solution

The fourth proportional to 69,400.95, 95,775.03 and 39,186.71 is: 54,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,400.95 : 95,775.03 = 39,186.71 : x
  2. Step 2: Convert to fraction form
    69,400.95/95,775.03 = 39,186.71/x
  3. Step 3: Cross multiply
    69,400.95x = 95,775.03 × 39,186.71
  4. Step 4: Simplify right side
    69,400.95x = 3,753,108,585.71
  5. Step 5: Solve for x
    x = 3,753,108,585.71/69,400.95
  6. Step 6: Final answer
    x = 54,078.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.