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Finding the Third Proportional to 391,957.50 and 858,615

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Solution

The third proportional to 391,957.50 and 858,615 is: 1,880,866.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,957.50 : 858,615 = 858,615 : x
  2. Step 2: Convert to fraction form
    391,957.50/858,615 = 858,615/x
  3. Step 3: Cross multiply
    391,957.50x = 858,615 × 858,615
  4. Step 4: Simplify right side
    391,957.50x = 737,219,718,225
  5. Step 5: Solve for x
    x = 737,219,718,225/391,957.50
  6. Step 6: Final answer
    x = 1,880,866.47

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.