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Finding the Fourth Proportional to 173,896.40, 260,844.60 and 85,104.20

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Solution

The fourth proportional to 173,896.40, 260,844.60 and 85,104.20 is: 127,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,896.40 : 260,844.60 = 85,104.20 : x
  2. Step 2: Convert to fraction form
    173,896.40/260,844.60 = 85,104.20/x
  3. Step 3: Cross multiply
    173,896.40x = 260,844.60 × 85,104.20
  4. Step 4: Simplify right side
    173,896.40x = 22,198,971,007.32
  5. Step 5: Solve for x
    x = 22,198,971,007.32/173,896.40
  6. Step 6: Final answer
    x = 127,656.30

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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.