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Finding the Third Proportional to 589 and 981.50

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Solution

The third proportional to 589 and 981.50 is: 1,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    589 : 981.50 = 981.50 : x
  2. Step 2: Convert to fraction form
    589/981.50 = 981.50/x
  3. Step 3: Cross multiply
    589x = 981.50 × 981.50
  4. Step 4: Simplify right side
    589x = 963,342.25
  5. Step 5: Solve for x
    x = 963,342.25/589
  6. Step 6: Final answer
    x = 1,635.56

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.