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Finding the Fourth Proportional to 157,818.18, 217,793.85 and 86,202.06

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Solution

The fourth proportional to 157,818.18, 217,793.85 and 86,202.06 is: 118,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,818.18 : 217,793.85 = 86,202.06 : x
  2. Step 2: Convert to fraction form
    157,818.18/217,793.85 = 86,202.06/x
  3. Step 3: Cross multiply
    157,818.18x = 217,793.85 × 86,202.06
  4. Step 4: Simplify right side
    157,818.18x = 18,774,278,525.33
  5. Step 5: Solve for x
    x = 18,774,278,525.33/157,818.18
  6. Step 6: Final answer
    x = 118,961.44

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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.