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Finding the Third Proportional to 58,330 and 90,491

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Solution

The third proportional to 58,330 and 90,491 is: 140,384.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,330 : 90,491 = 90,491 : x
  2. Step 2: Convert to fraction form
    58,330/90,491 = 90,491/x
  3. Step 3: Cross multiply
    58,330x = 90,491 × 90,491
  4. Step 4: Simplify right side
    58,330x = 8,188,621,081
  5. Step 5: Solve for x
    x = 8,188,621,081/58,330
  6. Step 6: Final answer
    x = 140,384.38

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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.