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Finding the Fourth Proportional to 173,898.20, 261,020.10 and 85,251.80

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Solution

The fourth proportional to 173,898.20, 261,020.10 and 85,251.80 is: 127,962.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,898.20 : 261,020.10 = 85,251.80 : x
  2. Step 2: Convert to fraction form
    173,898.20/261,020.10 = 85,251.80/x
  3. Step 3: Cross multiply
    173,898.20x = 261,020.10 × 85,251.80
  4. Step 4: Simplify right side
    173,898.20x = 22,252,433,361.18
  5. Step 5: Solve for x
    x = 22,252,433,361.18/173,898.20
  6. Step 6: Final answer
    x = 127,962.41

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1.5x scale

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.