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Finding the Fourth Proportional to 115,716.92, 173,674 and 45,645.44

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Solution

The fourth proportional to 115,716.92, 173,674 and 45,645.44 is: 68,507.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,716.92 : 173,674 = 45,645.44 : x
  2. Step 2: Convert to fraction form
    115,716.92/173,674 = 45,645.44/x
  3. Step 3: Cross multiply
    115,716.92x = 173,674 × 45,645.44
  4. Step 4: Simplify right side
    115,716.92x = 7,927,426,146.56
  5. Step 5: Solve for x
    x = 7,927,426,146.56/115,716.92
  6. Step 6: Final answer
    x = 68,507.06

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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.