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Finding the Fourth Proportional to 115,717.84, 173,425.08 and 65,820.88

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Solution

The fourth proportional to 115,717.84, 173,425.08 and 65,820.88 is: 98,645.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,717.84 : 173,425.08 = 65,820.88 : x
  2. Step 2: Convert to fraction form
    115,717.84/173,425.08 = 65,820.88/x
  3. Step 3: Cross multiply
    115,717.84x = 173,425.08 × 65,820.88
  4. Step 4: Simplify right side
    115,717.84x = 11,414,991,379.67
  5. Step 5: Solve for x
    x = 11,414,991,379.67/115,717.84
  6. Step 6: Final answer
    x = 98,645.04

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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.