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Finding the Fourth Proportional to 68,689.64, 102,849.88 and 43,593.82

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Solution

The fourth proportional to 68,689.64, 102,849.88 and 43,593.82 is: 65,273.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,689.64 : 102,849.88 = 43,593.82 : x
  2. Step 2: Convert to fraction form
    68,689.64/102,849.88 = 43,593.82/x
  3. Step 3: Cross multiply
    68,689.64x = 102,849.88 × 43,593.82
  4. Step 4: Simplify right side
    68,689.64x = 4,483,619,155.74
  5. Step 5: Solve for x
    x = 4,483,619,155.74/68,689.64
  6. Step 6: Final answer
    x = 65,273.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.