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Finding the Fourth Proportional to 118,997.76, 178,491.78 and 48,875.28

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Solution

The fourth proportional to 118,997.76, 178,491.78 and 48,875.28 is: 73,310.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,997.76 : 178,491.78 = 48,875.28 : x
  2. Step 2: Convert to fraction form
    118,997.76/178,491.78 = 48,875.28/x
  3. Step 3: Cross multiply
    118,997.76x = 178,491.78 × 48,875.28
  4. Step 4: Simplify right side
    118,997.76x = 8,723,835,725.20
  5. Step 5: Solve for x
    x = 8,723,835,725.20/118,997.76
  6. Step 6: Final answer
    x = 73,310.92

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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.