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Finding the Third Proportional to 178,154 and 261,399

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Solution

The third proportional to 178,154 and 261,399 is: 383,541.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,154 : 261,399 = 261,399 : x
  2. Step 2: Convert to fraction form
    178,154/261,399 = 261,399/x
  3. Step 3: Cross multiply
    178,154x = 261,399 × 261,399
  4. Step 4: Simplify right side
    178,154x = 68,329,437,201
  5. Step 5: Solve for x
    x = 68,329,437,201/178,154
  6. Step 6: Final answer
    x = 383,541.41

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.