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Finding the Third Proportional to 45,389 and 66,475

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Solution

The third proportional to 45,389 and 66,475 is: 97,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,389 : 66,475 = 66,475 : x
  2. Step 2: Convert to fraction form
    45,389/66,475 = 66,475/x
  3. Step 3: Cross multiply
    45,389x = 66,475 × 66,475
  4. Step 4: Simplify right side
    45,389x = 4,418,925,625
  5. Step 5: Solve for x
    x = 4,418,925,625/45,389
  6. Step 6: Final answer
    x = 97,356.75

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.