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Finding the Fourth Proportional to 157,393.79, 217,197.11 and 85,772.27

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Solution

The fourth proportional to 157,393.79, 217,197.11 and 85,772.27 is: 118,362.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,393.79 : 217,197.11 = 85,772.27 : x
  2. Step 2: Convert to fraction form
    157,393.79/217,197.11 = 85,772.27/x
  3. Step 3: Cross multiply
    157,393.79x = 217,197.11 × 85,772.27
  4. Step 4: Simplify right side
    157,393.79x = 18,629,489,919.56
  5. Step 5: Solve for x
    x = 18,629,489,919.56/157,393.79
  6. Step 6: Final answer
    x = 118,362.29

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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.