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Finding the Fourth Proportional to 68,832.13, 103,285.80 and 26,713.87

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Solution

The fourth proportional to 68,832.13, 103,285.80 and 26,713.87 is: 40,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,832.13 : 103,285.80 = 26,713.87 : x
  2. Step 2: Convert to fraction form
    68,832.13/103,285.80 = 26,713.87/x
  3. Step 3: Cross multiply
    68,832.13x = 103,285.80 × 26,713.87
  4. Step 4: Simplify right side
    68,832.13x = 2,759,163,434.05
  5. Step 5: Solve for x
    x = 2,759,163,434.05/68,832.13
  6. Step 6: Final answer
    x = 40,085.40

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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.