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Finding the Fourth Proportional to 157,446.60, 217,274.90 and 85,826.60

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Solution

The fourth proportional to 157,446.60, 217,274.90 and 85,826.60 is: 118,439.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,446.60 : 217,274.90 = 85,826.60 : x
  2. Step 2: Convert to fraction form
    157,446.60/217,274.90 = 85,826.60/x
  3. Step 3: Cross multiply
    157,446.60x = 217,274.90 × 85,826.60
  4. Step 4: Simplify right side
    157,446.60x = 18,647,965,932.34
  5. Step 5: Solve for x
    x = 18,647,965,932.34/157,446.60
  6. Step 6: Final answer
    x = 118,439.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.