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Finding the Fourth Proportional to 118,881.10, 178,223.37 and 92,701.90

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Solution

The fourth proportional to 118,881.10, 178,223.37 and 92,701.90 is: 138,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,881.10 : 178,223.37 = 92,701.90 : x
  2. Step 2: Convert to fraction form
    118,881.10/178,223.37 = 92,701.90/x
  3. Step 3: Cross multiply
    118,881.10x = 178,223.37 × 92,701.90
  4. Step 4: Simplify right side
    118,881.10x = 16,521,645,023.40
  5. Step 5: Solve for x
    x = 16,521,645,023.40/118,881.10
  6. Step 6: Final answer
    x = 138,976.21

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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.