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Finding the Fourth Proportional to 115,716.84, 173,423.58 and 65,819.88

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Solution

The fourth proportional to 115,716.84, 173,423.58 and 65,819.88 is: 98,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,716.84 : 173,423.58 = 65,819.88 : x
  2. Step 2: Convert to fraction form
    115,716.84/173,423.58 = 65,819.88/x
  3. Step 3: Cross multiply
    115,716.84x = 173,423.58 × 65,819.88
  4. Step 4: Simplify right side
    115,716.84x = 11,414,719,224.77
  5. Step 5: Solve for x
    x = 11,414,719,224.77/115,716.84
  6. Step 6: Final answer
    x = 98,643.54

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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.