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Finding the Third Proportional to 12,021 and 17,931.75

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Solution

The third proportional to 12,021 and 17,931.75 is: 26,748.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021 : 17,931.75 = 17,931.75 : x
  2. Step 2: Convert to fraction form
    12,021/17,931.75 = 17,931.75/x
  3. Step 3: Cross multiply
    12,021x = 17,931.75 × 17,931.75
  4. Step 4: Simplify right side
    12,021x = 321,547,658.06
  5. Step 5: Solve for x
    x = 321,547,658.06/12,021
  6. Step 6: Final answer
    x = 26,748.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.