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Finding the Fourth Proportional to 104,487.68, 144,215.96 and 68,681.03

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Solution

The fourth proportional to 104,487.68, 144,215.96 and 68,681.03 is: 94,794.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,487.68 : 144,215.96 = 68,681.03 : x
  2. Step 2: Convert to fraction form
    104,487.68/144,215.96 = 68,681.03/x
  3. Step 3: Cross multiply
    104,487.68x = 144,215.96 × 68,681.03
  4. Step 4: Simplify right side
    104,487.68x = 9,904,899,610.75
  5. Step 5: Solve for x
    x = 9,904,899,610.75/104,487.68
  6. Step 6: Final answer
    x = 94,794.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.