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Finding the Fourth Proportional to 171,000.40, 256,500.60 and 115,013.20

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Solution

The fourth proportional to 171,000.40, 256,500.60 and 115,013.20 is: 172,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,000.40 : 256,500.60 = 115,013.20 : x
  2. Step 2: Convert to fraction form
    171,000.40/256,500.60 = 115,013.20/x
  3. Step 3: Cross multiply
    171,000.40x = 256,500.60 × 115,013.20
  4. Step 4: Simplify right side
    171,000.40x = 29,500,954,807.92
  5. Step 5: Solve for x
    x = 29,500,954,807.92/171,000.40
  6. Step 6: Final answer
    x = 172,519.80

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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.