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Finding the Fourth Proportional to 115,989.80, 173,844.30 and 49,289.90

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Solution

The fourth proportional to 115,989.80, 173,844.30 and 49,289.90 is: 73,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,989.80 : 173,844.30 = 49,289.90 : x
  2. Step 2: Convert to fraction form
    115,989.80/173,844.30 = 49,289.90/x
  3. Step 3: Cross multiply
    115,989.80x = 173,844.30 × 49,289.90
  4. Step 4: Simplify right side
    115,989.80x = 8,568,768,162.57
  5. Step 5: Solve for x
    x = 8,568,768,162.57/115,989.80
  6. Step 6: Final answer
    x = 73,875.19

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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.