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Finding the Fourth Proportional to 118,432.80, 177,454.80 and 100,936.80

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Solution

The fourth proportional to 118,432.80, 177,454.80 and 100,936.80 is: 151,239.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,432.80 : 177,454.80 = 100,936.80 : x
  2. Step 2: Convert to fraction form
    118,432.80/177,454.80 = 100,936.80/x
  3. Step 3: Cross multiply
    118,432.80x = 177,454.80 × 100,936.80
  4. Step 4: Simplify right side
    118,432.80x = 17,911,719,656.64
  5. Step 5: Solve for x
    x = 17,911,719,656.64/118,432.80
  6. Step 6: Final answer
    x = 151,239.52

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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.