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Finding the Third Proportional to 29,718 and 47,312

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Solution

The third proportional to 29,718 and 47,312 is: 75,322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,718 : 47,312 = 47,312 : x
  2. Step 2: Convert to fraction form
    29,718/47,312 = 47,312/x
  3. Step 3: Cross multiply
    29,718x = 47,312 × 47,312
  4. Step 4: Simplify right side
    29,718x = 2,238,425,344
  5. Step 5: Solve for x
    x = 2,238,425,344/29,718
  6. Step 6: Final answer
    x = 75,322.21

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.