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Finding the Fourth Proportional to 170,778.70, 256,168.05 and 87,834.70

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Solution

The fourth proportional to 170,778.70, 256,168.05 and 87,834.70 is: 131,752.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,778.70 : 256,168.05 = 87,834.70 : x
  2. Step 2: Convert to fraction form
    170,778.70/256,168.05 = 87,834.70/x
  3. Step 3: Cross multiply
    170,778.70x = 256,168.05 × 87,834.70
  4. Step 4: Simplify right side
    170,778.70x = 22,500,443,821.34
  5. Step 5: Solve for x
    x = 22,500,443,821.34/170,778.70
  6. Step 6: Final answer
    x = 131,752.05

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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.