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Finding the Third Proportional to 942 and 2,415

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Solution

The third proportional to 942 and 2,415 is: 6,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    942 : 2,415 = 2,415 : x
  2. Step 2: Convert to fraction form
    942/2,415 = 2,415/x
  3. Step 3: Cross multiply
    942x = 2,415 × 2,415
  4. Step 4: Simplify right side
    942x = 5,832,225
  5. Step 5: Solve for x
    x = 5,832,225/942
  6. Step 6: Final answer
    x = 6,191.32

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.