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Finding the Fourth Proportional to 126,335.70, 174,335.79 and 68,963.60

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Solution

The fourth proportional to 126,335.70, 174,335.79 and 68,963.60 is: 95,165.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,335.70 : 174,335.79 = 68,963.60 : x
  2. Step 2: Convert to fraction form
    126,335.70/174,335.79 = 68,963.60/x
  3. Step 3: Cross multiply
    126,335.70x = 174,335.79 × 68,963.60
  4. Step 4: Simplify right side
    126,335.70x = 12,022,824,381.70
  5. Step 5: Solve for x
    x = 12,022,824,381.70/126,335.70
  6. Step 6: Final answer
    x = 95,165.69

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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.