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Finding the Fourth Proportional to 217,586.76, 300,268.92 and 122,093.22

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Solution

The fourth proportional to 217,586.76, 300,268.92 and 122,093.22 is: 168,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,586.76 : 300,268.92 = 122,093.22 : x
  2. Step 2: Convert to fraction form
    217,586.76/300,268.92 = 122,093.22/x
  3. Step 3: Cross multiply
    217,586.76x = 300,268.92 × 122,093.22
  4. Step 4: Simplify right side
    217,586.76x = 36,660,799,308.72
  5. Step 5: Solve for x
    x = 36,660,799,308.72/217,586.76
  6. Step 6: Final answer
    x = 168,488.19

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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.