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Finding the Third Proportional to 655.31 and 1,130.06

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Solution

The third proportional to 655.31 and 1,130.06 is: 1,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.31 : 1,130.06 = 1,130.06 : x
  2. Step 2: Convert to fraction form
    655.31/1,130.06 = 1,130.06/x
  3. Step 3: Cross multiply
    655.31x = 1,130.06 × 1,130.06
  4. Step 4: Simplify right side
    655.31x = 1,277,041.25
  5. Step 5: Solve for x
    x = 1,277,041.25/655.31
  6. Step 6: Final answer
    x = 1,948.75

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Why These Related Problems?

These problems maintain the same ratio (1.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.