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Finding the Third Proportional to 568.50 and 915.75

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Solution

The third proportional to 568.50 and 915.75 is: 1,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.50 : 915.75 = 915.75 : x
  2. Step 2: Convert to fraction form
    568.50/915.75 = 915.75/x
  3. Step 3: Cross multiply
    568.50x = 915.75 × 915.75
  4. Step 4: Simplify right side
    568.50x = 838,598.06
  5. Step 5: Solve for x
    x = 838,598.06/568.50
  6. Step 6: Final answer
    x = 1,475.11

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.