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Finding the Fourth Proportional to 118,902.80, 178,353.96 and 28,944.80

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Solution

The fourth proportional to 118,902.80, 178,353.96 and 28,944.80 is: 43,417.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,902.80 : 178,353.96 = 28,944.80 : x
  2. Step 2: Convert to fraction form
    118,902.80/178,353.96 = 28,944.80/x
  3. Step 3: Cross multiply
    118,902.80x = 178,353.96 × 28,944.80
  4. Step 4: Simplify right side
    118,902.80x = 5,162,419,701.41
  5. Step 5: Solve for x
    x = 5,162,419,701.41/118,902.80
  6. Step 6: Final answer
    x = 43,417.14

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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.