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Finding the Fourth Proportional to 174,110.80, 261,214.80 and 85,367.20

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Solution

The fourth proportional to 174,110.80, 261,214.80 and 85,367.20 is: 128,074.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,110.80 : 261,214.80 = 85,367.20 : x
  2. Step 2: Convert to fraction form
    174,110.80/261,214.80 = 85,367.20/x
  3. Step 3: Cross multiply
    174,110.80x = 261,214.80 × 85,367.20
  4. Step 4: Simplify right side
    174,110.80x = 22,299,176,074.56
  5. Step 5: Solve for x
    x = 22,299,176,074.56/174,110.80
  6. Step 6: Final answer
    x = 128,074.63

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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.