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Finding the Fourth Proportional to 118,769.60, 178,255.20 and 48,699.20

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Solution

The fourth proportional to 118,769.60, 178,255.20 and 48,699.20 is: 73,090.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,769.60 : 178,255.20 = 48,699.20 : x
  2. Step 2: Convert to fraction form
    118,769.60/178,255.20 = 48,699.20/x
  3. Step 3: Cross multiply
    118,769.60x = 178,255.20 × 48,699.20
  4. Step 4: Simplify right side
    118,769.60x = 8,680,885,635.84
  5. Step 5: Solve for x
    x = 8,680,885,635.84/118,769.60
  6. Step 6: Final answer
    x = 73,090.13

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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.