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Finding the Third Proportional to 603,708.19 and 816,988.78

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Solution

The third proportional to 603,708.19 and 816,988.78 is: 1,105,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,708.19 : 816,988.78 = 816,988.78 : x
  2. Step 2: Convert to fraction form
    603,708.19/816,988.78 = 816,988.78/x
  3. Step 3: Cross multiply
    603,708.19x = 816,988.78 × 816,988.78
  4. Step 4: Simplify right side
    603,708.19x = 667,470,668,688.36
  5. Step 5: Solve for x
    x = 667,470,668,688.36/603,708.19
  6. Step 6: Final answer
    x = 1,105,618.05

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.