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Finding the Third Proportional to 398,540 and 592,164

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Solution

The third proportional to 398,540 and 592,164 is: 879,856.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,540 : 592,164 = 592,164 : x
  2. Step 2: Convert to fraction form
    398,540/592,164 = 592,164/x
  3. Step 3: Cross multiply
    398,540x = 592,164 × 592,164
  4. Step 4: Simplify right side
    398,540x = 350,658,202,896
  5. Step 5: Solve for x
    x = 350,658,202,896/398,540
  6. Step 6: Final answer
    x = 879,856.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.