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Finding the Third Proportional to 4,712 and 7,000

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Solution

The third proportional to 4,712 and 7,000 is: 10,398.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,712 : 7,000 = 7,000 : x
  2. Step 2: Convert to fraction form
    4,712/7,000 = 7,000/x
  3. Step 3: Cross multiply
    4,712x = 7,000 × 7,000
  4. Step 4: Simplify right side
    4,712x = 49,000,000
  5. Step 5: Solve for x
    x = 49,000,000/4,712
  6. Step 6: Final answer
    x = 10,398.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.