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Finding the Fourth Proportional to 173,818.20, 260,621.70 and 68,515.80

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Solution

The fourth proportional to 173,818.20, 260,621.70 and 68,515.80 is: 102,732.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,818.20 : 260,621.70 = 68,515.80 : x
  2. Step 2: Convert to fraction form
    173,818.20/260,621.70 = 68,515.80/x
  3. Step 3: Cross multiply
    173,818.20x = 260,621.70 × 68,515.80
  4. Step 4: Simplify right side
    173,818.20x = 17,856,704,272.86
  5. Step 5: Solve for x
    x = 17,856,704,272.86/173,818.20
  6. Step 6: Final answer
    x = 102,732.07

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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.