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Finding the Fourth Proportional to 117,856.80, 176,590.80 and 100,360.80

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Solution

The fourth proportional to 117,856.80, 176,590.80 and 100,360.80 is: 150,375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,856.80 : 176,590.80 = 100,360.80 : x
  2. Step 2: Convert to fraction form
    117,856.80/176,590.80 = 100,360.80/x
  3. Step 3: Cross multiply
    117,856.80x = 176,590.80 × 100,360.80
  4. Step 4: Simplify right side
    117,856.80x = 17,722,793,960.64
  5. Step 5: Solve for x
    x = 17,722,793,960.64/117,856.80
  6. Step 6: Final answer
    x = 150,375.66

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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.