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Finding the Third Proportional to 1,045.50 and 1,565

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Solution

The third proportional to 1,045.50 and 1,565 is: 2,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.50 : 1,565 = 1,565 : x
  2. Step 2: Convert to fraction form
    1,045.50/1,565 = 1,565/x
  3. Step 3: Cross multiply
    1,045.50x = 1,565 × 1,565
  4. Step 4: Simplify right side
    1,045.50x = 2,449,225
  5. Step 5: Solve for x
    x = 2,449,225/1,045.50
  6. Step 6: Final answer
    x = 2,342.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.