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Finding the Third Proportional to 718.75 and 1,522

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Solution

The third proportional to 718.75 and 1,522 is: 3,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.75 : 1,522 = 1,522 : x
  2. Step 2: Convert to fraction form
    718.75/1,522 = 1,522/x
  3. Step 3: Cross multiply
    718.75x = 1,522 × 1,522
  4. Step 4: Simplify right side
    718.75x = 2,316,484
  5. Step 5: Solve for x
    x = 2,316,484/718.75
  6. Step 6: Final answer
    x = 3,222.93

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.