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Finding the Third Proportional to 58,920 and 91,377

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Solution

The third proportional to 58,920 and 91,377 is: 141,713.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,920 : 91,377 = 91,377 : x
  2. Step 2: Convert to fraction form
    58,920/91,377 = 91,377/x
  3. Step 3: Cross multiply
    58,920x = 91,377 × 91,377
  4. Step 4: Simplify right side
    58,920x = 8,349,756,129
  5. Step 5: Solve for x
    x = 8,349,756,129/58,920
  6. Step 6: Final answer
    x = 141,713.44

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.