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Finding the Third Proportional to 4,960 and 8,070

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Solution

The third proportional to 4,960 and 8,070 is: 13,130.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,960 : 8,070 = 8,070 : x
  2. Step 2: Convert to fraction form
    4,960/8,070 = 8,070/x
  3. Step 3: Cross multiply
    4,960x = 8,070 × 8,070
  4. Step 4: Simplify right side
    4,960x = 65,124,900
  5. Step 5: Solve for x
    x = 65,124,900/4,960
  6. Step 6: Final answer
    x = 13,130.02

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.