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Finding the Fourth Proportional to 118,645.74, 163,715.31 and 68,335.02

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Solution

The fourth proportional to 118,645.74, 163,715.31 and 68,335.02 is: 94,293.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,645.74 : 163,715.31 = 68,335.02 : x
  2. Step 2: Convert to fraction form
    118,645.74/163,715.31 = 68,335.02/x
  3. Step 3: Cross multiply
    118,645.74x = 163,715.31 × 68,335.02
  4. Step 4: Simplify right side
    118,645.74x = 11,187,488,983.16
  5. Step 5: Solve for x
    x = 11,187,488,983.16/118,645.74
  6. Step 6: Final answer
    x = 94,293.22

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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.