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Finding the Fourth Proportional to 68,762.70, 103,078.13 and 43,725.24

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Solution

The fourth proportional to 68,762.70, 103,078.13 and 43,725.24 is: 65,545.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,762.70 : 103,078.13 = 43,725.24 : x
  2. Step 2: Convert to fraction form
    68,762.70/103,078.13 = 43,725.24/x
  3. Step 3: Cross multiply
    68,762.70x = 103,078.13 × 43,725.24
  4. Step 4: Simplify right side
    68,762.70x = 4,507,115,754.38
  5. Step 5: Solve for x
    x = 4,507,115,754.38/68,762.70
  6. Step 6: Final answer
    x = 65,545.94

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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.