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Finding the Fourth Proportional to 185,591.89, 256,117.49 and 100,708.96

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Solution

The fourth proportional to 185,591.89, 256,117.49 and 100,708.96 is: 138,978.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,591.89 : 256,117.49 = 100,708.96 : x
  2. Step 2: Convert to fraction form
    185,591.89/256,117.49 = 100,708.96/x
  3. Step 3: Cross multiply
    185,591.89x = 256,117.49 × 100,708.96
  4. Step 4: Simplify right side
    185,591.89x = 25,793,326,055.71
  5. Step 5: Solve for x
    x = 25,793,326,055.71/185,591.89
  6. Step 6: Final answer
    x = 138,978.73

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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.