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Finding the Fourth Proportional to 118,963.86, 178,462.29 and 40,100.64

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Solution

The fourth proportional to 118,963.86, 178,462.29 and 40,100.64 is: 60,156.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,963.86 : 178,462.29 = 40,100.64 : x
  2. Step 2: Convert to fraction form
    118,963.86/178,462.29 = 40,100.64/x
  3. Step 3: Cross multiply
    118,963.86x = 178,462.29 × 40,100.64
  4. Step 4: Simplify right side
    118,963.86x = 7,156,452,044.87
  5. Step 5: Solve for x
    x = 7,156,452,044.87/118,963.86
  6. Step 6: Final answer
    x = 60,156.52

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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.