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Finding the Fourth Proportional to 118,614.78, 177,987.86 and 48,543.30

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Solution

The fourth proportional to 118,614.78, 177,987.86 and 48,543.30 is: 72,841.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,614.78 : 177,987.86 = 48,543.30 : x
  2. Step 2: Convert to fraction form
    118,614.78/177,987.86 = 48,543.30/x
  3. Step 3: Cross multiply
    118,614.78x = 177,987.86 × 48,543.30
  4. Step 4: Simplify right side
    118,614.78x = 8,640,118,084.34
  5. Step 5: Solve for x
    x = 8,640,118,084.34/118,614.78
  6. Step 6: Final answer
    x = 72,841.83

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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.