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Finding the Third Proportional to 3,312.13 and 4,642.25

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Solution

The third proportional to 3,312.13 and 4,642.25 is: 6,506.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.13 : 4,642.25 = 4,642.25 : x
  2. Step 2: Convert to fraction form
    3,312.13/4,642.25 = 4,642.25/x
  3. Step 3: Cross multiply
    3,312.13x = 4,642.25 × 4,642.25
  4. Step 4: Simplify right side
    3,312.13x = 21,550,485.06
  5. Step 5: Solve for x
    x = 21,550,485.06/3,312.13
  6. Step 6: Final answer
    x = 6,506.54

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.