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Finding the Third Proportional to 180,274.50 and 261,117

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Solution

The third proportional to 180,274.50 and 261,117 is: 378,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,274.50 : 261,117 = 261,117 : x
  2. Step 2: Convert to fraction form
    180,274.50/261,117 = 261,117/x
  3. Step 3: Cross multiply
    180,274.50x = 261,117 × 261,117
  4. Step 4: Simplify right side
    180,274.50x = 68,182,087,689
  5. Step 5: Solve for x
    x = 68,182,087,689/180,274.50
  6. Step 6: Final answer
    x = 378,212.60

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.