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Finding the Fourth Proportional to 68,712.10, 103,036.56 and 24,340.30

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Solution

The fourth proportional to 68,712.10, 103,036.56 and 24,340.30 is: 36,499.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,712.10 : 103,036.56 = 24,340.30 : x
  2. Step 2: Convert to fraction form
    68,712.10/103,036.56 = 24,340.30/x
  3. Step 3: Cross multiply
    68,712.10x = 103,036.56 × 24,340.30
  4. Step 4: Simplify right side
    68,712.10x = 2,507,940,781.37
  5. Step 5: Solve for x
    x = 2,507,940,781.37/68,712.10
  6. Step 6: Final answer
    x = 36,499.26

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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.