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Finding the Fourth Proportional to 171,061.10, 256,591.65 and 112,078.70

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Solution

The fourth proportional to 171,061.10, 256,591.65 and 112,078.70 is: 168,118.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,061.10 : 256,591.65 = 112,078.70 : x
  2. Step 2: Convert to fraction form
    171,061.10/256,591.65 = 112,078.70/x
  3. Step 3: Cross multiply
    171,061.10x = 256,591.65 × 112,078.70
  4. Step 4: Simplify right side
    171,061.10x = 28,758,458,562.86
  5. Step 5: Solve for x
    x = 28,758,458,562.86/171,061.10
  6. Step 6: Final answer
    x = 168,118.05

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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.