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Finding the Third Proportional to 724.75 and 970.88

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Solution

The third proportional to 724.75 and 970.88 is: 1,300.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.75 : 970.88 = 970.88 : x
  2. Step 2: Convert to fraction form
    724.75/970.88 = 970.88/x
  3. Step 3: Cross multiply
    724.75x = 970.88 × 970.88
  4. Step 4: Simplify right side
    724.75x = 942,598.27
  5. Step 5: Solve for x
    x = 942,598.27/724.75
  6. Step 6: Final answer
    x = 1,300.58

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.