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Finding the Fourth Proportional to 115,858.40, 173,744.40 and 45,723.20

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Solution

The fourth proportional to 115,858.40, 173,744.40 and 45,723.20 is: 68,567.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,858.40 : 173,744.40 = 45,723.20 : x
  2. Step 2: Convert to fraction form
    115,858.40/173,744.40 = 45,723.20/x
  3. Step 3: Cross multiply
    115,858.40x = 173,744.40 × 45,723.20
  4. Step 4: Simplify right side
    115,858.40x = 7,944,149,950.08
  5. Step 5: Solve for x
    x = 7,944,149,950.08/115,858.40
  6. Step 6: Final answer
    x = 68,567.75

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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.