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Finding the Third Proportional to 979 and 1,527

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Solution

The third proportional to 979 and 1,527 is: 2,381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    979 : 1,527 = 1,527 : x
  2. Step 2: Convert to fraction form
    979/1,527 = 1,527/x
  3. Step 3: Cross multiply
    979x = 1,527 × 1,527
  4. Step 4: Simplify right side
    979x = 2,331,729
  5. Step 5: Solve for x
    x = 2,331,729/979
  6. Step 6: Final answer
    x = 2,381.75

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.