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Finding the Fourth Proportional to 124,684.64, 172,057.20 and 68,092.64

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Solution

The fourth proportional to 124,684.64, 172,057.20 and 68,092.64 is: 93,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,684.64 : 172,057.20 = 68,092.64 : x
  2. Step 2: Convert to fraction form
    124,684.64/172,057.20 = 68,092.64/x
  3. Step 3: Cross multiply
    124,684.64x = 172,057.20 × 68,092.64
  4. Step 4: Simplify right side
    124,684.64x = 11,715,828,979.01
  5. Step 5: Solve for x
    x = 11,715,828,979.01/124,684.64
  6. Step 6: Final answer
    x = 93,963.69

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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.