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Finding the Fourth Proportional to 45,301.96, 67,978.14 and 17,240.68

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Solution

The fourth proportional to 45,301.96, 67,978.14 and 17,240.68 is: 25,870.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,301.96 : 67,978.14 = 17,240.68 : x
  2. Step 2: Convert to fraction form
    45,301.96/67,978.14 = 17,240.68/x
  3. Step 3: Cross multiply
    45,301.96x = 67,978.14 × 17,240.68
  4. Step 4: Simplify right side
    45,301.96x = 1,171,989,358.74
  5. Step 5: Solve for x
    x = 1,171,989,358.74/45,301.96
  6. Step 6: Final answer
    x = 25,870.61

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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.