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Finding the Fourth Proportional to 261,388.88, 392,061.36 and 83,847.68

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Solution

The fourth proportional to 261,388.88, 392,061.36 and 83,847.68 is: 125,764.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,388.88 : 392,061.36 = 83,847.68 : x
  2. Step 2: Convert to fraction form
    261,388.88/392,061.36 = 83,847.68/x
  3. Step 3: Cross multiply
    261,388.88x = 392,061.36 × 83,847.68
  4. Step 4: Simplify right side
    261,388.88x = 32,873,435,453.64
  5. Step 5: Solve for x
    x = 32,873,435,453.64/261,388.88
  6. Step 6: Final answer
    x = 125,764.48

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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.