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Finding the Fourth Proportional to 157,818.68, 217,794.54 and 86,202.56

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Solution

The fourth proportional to 157,818.68, 217,794.54 and 86,202.56 is: 118,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,818.68 : 217,794.54 = 86,202.56 : x
  2. Step 2: Convert to fraction form
    157,818.68/217,794.54 = 86,202.56/x
  3. Step 3: Cross multiply
    157,818.68x = 217,794.54 × 86,202.56
  4. Step 4: Simplify right side
    157,818.68x = 18,774,446,902.02
  5. Step 5: Solve for x
    x = 18,774,446,902.02/157,818.68
  6. Step 6: Final answer
    x = 118,962.13

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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.