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Finding the Fourth Proportional to 173,891.40, 260,837.10 and 85,099.20

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Solution

The fourth proportional to 173,891.40, 260,837.10 and 85,099.20 is: 127,648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,891.40 : 260,837.10 = 85,099.20 : x
  2. Step 2: Convert to fraction form
    173,891.40/260,837.10 = 85,099.20/x
  3. Step 3: Cross multiply
    173,891.40x = 260,837.10 × 85,099.20
  4. Step 4: Simplify right side
    173,891.40x = 22,197,028,540.32
  5. Step 5: Solve for x
    x = 22,197,028,540.32/173,891.40
  6. Step 6: Final answer
    x = 127,648.80

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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.