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Finding the Third Proportional to 1,948.13 and 2,921.63

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Solution

The third proportional to 1,948.13 and 2,921.63 is: 4,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.13 : 2,921.63 = 2,921.63 : x
  2. Step 2: Convert to fraction form
    1,948.13/2,921.63 = 2,921.63/x
  3. Step 3: Cross multiply
    1,948.13x = 2,921.63 × 2,921.63
  4. Step 4: Simplify right side
    1,948.13x = 8,535,892.64
  5. Step 5: Solve for x
    x = 8,535,892.64/1,948.13
  6. Step 6: Final answer
    x = 4,381.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.