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Finding the Fourth Proportional to 68,664.74, 102,482.30 and 64,180.74

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Solution

The fourth proportional to 68,664.74, 102,482.30 and 64,180.74 is: 95,789.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,664.74 : 102,482.30 = 64,180.74 : x
  2. Step 2: Convert to fraction form
    68,664.74/102,482.30 = 64,180.74/x
  3. Step 3: Cross multiply
    68,664.74x = 102,482.30 × 64,180.74
  4. Step 4: Simplify right side
    68,664.74x = 6,577,389,850.90
  5. Step 5: Solve for x
    x = 6,577,389,850.90/68,664.74
  6. Step 6: Final answer
    x = 95,789.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.