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Finding the Fourth Proportional to 118,913.28, 164,100.24 and 68,612.28

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Solution

The fourth proportional to 118,913.28, 164,100.24 and 68,612.28 is: 94,684.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,913.28 : 164,100.24 = 68,612.28 : x
  2. Step 2: Convert to fraction form
    118,913.28/164,100.24 = 68,612.28/x
  3. Step 3: Cross multiply
    118,913.28x = 164,100.24 × 68,612.28
  4. Step 4: Simplify right side
    118,913.28x = 11,259,291,614.95
  5. Step 5: Solve for x
    x = 11,259,291,614.95/118,913.28
  6. Step 6: Final answer
    x = 94,684.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.