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Finding the Third Proportional to 747 and 2,011.50

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Solution

The third proportional to 747 and 2,011.50 is: 5,416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    747 : 2,011.50 = 2,011.50 : x
  2. Step 2: Convert to fraction form
    747/2,011.50 = 2,011.50/x
  3. Step 3: Cross multiply
    747x = 2,011.50 × 2,011.50
  4. Step 4: Simplify right side
    747x = 4,046,132.25
  5. Step 5: Solve for x
    x = 4,046,132.25/747
  6. Step 6: Final answer
    x = 5,416.51

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Why These Related Problems?

These problems maintain the same ratio (2.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.