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Finding the Fourth Proportional to 68,079.11, 102,011.96 and 43,066.32

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Solution

The fourth proportional to 68,079.11, 102,011.96 and 43,066.32 is: 64,531.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,079.11 : 102,011.96 = 43,066.32 : x
  2. Step 2: Convert to fraction form
    68,079.11/102,011.96 = 43,066.32/x
  3. Step 3: Cross multiply
    68,079.11x = 102,011.96 × 43,066.32
  4. Step 4: Simplify right side
    68,079.11x = 4,393,279,497.86
  5. Step 5: Solve for x
    x = 4,393,279,497.86/68,079.11
  6. Step 6: Final answer
    x = 64,531.98

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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.