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Finding the Fourth Proportional to 174,772.80, 261,986.40 and 69,451.20

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Solution

The fourth proportional to 174,772.80, 261,986.40 and 69,451.20 is: 104,108.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,772.80 : 261,986.40 = 69,451.20 : x
  2. Step 2: Convert to fraction form
    174,772.80/261,986.40 = 69,451.20/x
  3. Step 3: Cross multiply
    174,772.80x = 261,986.40 × 69,451.20
  4. Step 4: Simplify right side
    174,772.80x = 18,195,269,863.68
  5. Step 5: Solve for x
    x = 18,195,269,863.68/174,772.80
  6. Step 6: Final answer
    x = 104,108.13

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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.