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Finding the Fourth Proportional to 121,757.93, 168,025.51 and 68,042.94

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Solution

The fourth proportional to 121,757.93, 168,025.51 and 68,042.94 is: 93,899.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,757.93 : 168,025.51 = 68,042.94 : x
  2. Step 2: Convert to fraction form
    121,757.93/168,025.51 = 68,042.94/x
  3. Step 3: Cross multiply
    121,757.93x = 168,025.51 × 68,042.94
  4. Step 4: Simplify right side
    121,757.93x = 11,432,948,767.62
  5. Step 5: Solve for x
    x = 11,432,948,767.62/121,757.93
  6. Step 6: Final answer
    x = 93,899.00

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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.