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Finding the Third Proportional to 91,758 and 120,924

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Solution

The third proportional to 91,758 and 120,924 is: 159,360.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,758 : 120,924 = 120,924 : x
  2. Step 2: Convert to fraction form
    91,758/120,924 = 120,924/x
  3. Step 3: Cross multiply
    91,758x = 120,924 × 120,924
  4. Step 4: Simplify right side
    91,758x = 14,622,613,776
  5. Step 5: Solve for x
    x = 14,622,613,776/91,758
  6. Step 6: Final answer
    x = 159,360.64

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.