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Finding the Fourth Proportional to 26,889.60, 40,366.80 and 26,695.20

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Solution

The fourth proportional to 26,889.60, 40,366.80 and 26,695.20 is: 40,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,889.60 : 40,366.80 = 26,695.20 : x
  2. Step 2: Convert to fraction form
    26,889.60/40,366.80 = 26,695.20/x
  3. Step 3: Cross multiply
    26,889.60x = 40,366.80 × 26,695.20
  4. Step 4: Simplify right side
    26,889.60x = 1,077,599,799.36
  5. Step 5: Solve for x
    x = 1,077,599,799.36/26,889.60
  6. Step 6: Final answer
    x = 40,074.97

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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.