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Finding the Fourth Proportional to 68,079.56, 102,105.84 and 64,703.96

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Solution

The fourth proportional to 68,079.56, 102,105.84 and 64,703.96 is: 97,043.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,079.56 : 102,105.84 = 64,703.96 : x
  2. Step 2: Convert to fraction form
    68,079.56/102,105.84 = 64,703.96/x
  3. Step 3: Cross multiply
    68,079.56x = 102,105.84 × 64,703.96
  4. Step 4: Simplify right side
    68,079.56x = 6,606,652,187.13
  5. Step 5: Solve for x
    x = 6,606,652,187.13/68,079.56
  6. Step 6: Final answer
    x = 97,043.11

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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.