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Finding the Third Proportional to 60,912 and 91,368

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Solution

The third proportional to 60,912 and 91,368 is: 137,052

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,912 : 91,368 = 91,368 : x
  2. Step 2: Convert to fraction form
    60,912/91,368 = 91,368/x
  3. Step 3: Cross multiply
    60,912x = 91,368 × 91,368
  4. Step 4: Simplify right side
    60,912x = 8,348,111,424
  5. Step 5: Solve for x
    x = 8,348,111,424/60,912
  6. Step 6: Final answer
    x = 137,052

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.