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Finding the Fourth Proportional to 170,909.44, 256,261.52 and 70,948.96

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Solution

The fourth proportional to 170,909.44, 256,261.52 and 70,948.96 is: 106,380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,909.44 : 256,261.52 = 70,948.96 : x
  2. Step 2: Convert to fraction form
    170,909.44/256,261.52 = 70,948.96/x
  3. Step 3: Cross multiply
    170,909.44x = 256,261.52 × 70,948.96
  4. Step 4: Simplify right side
    170,909.44x = 18,181,488,332.02
  5. Step 5: Solve for x
    x = 18,181,488,332.02/170,909.44
  6. Step 6: Final answer
    x = 106,380.83

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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.