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Finding the Fourth Proportional to 68,482.40, 102,721.44 and 40,593.56

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Solution

The fourth proportional to 68,482.40, 102,721.44 and 40,593.56 is: 60,889.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,482.40 : 102,721.44 = 40,593.56 : x
  2. Step 2: Convert to fraction form
    68,482.40/102,721.44 = 40,593.56/x
  3. Step 3: Cross multiply
    68,482.40x = 102,721.44 × 40,593.56
  4. Step 4: Simplify right side
    68,482.40x = 4,169,828,937.93
  5. Step 5: Solve for x
    x = 4,169,828,937.93/68,482.40
  6. Step 6: Final answer
    x = 60,889.06

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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.