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Finding the Third Proportional to 196,292 and 423,688

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Solution

The third proportional to 196,292 and 423,688 is: 914,512.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,292 : 423,688 = 423,688 : x
  2. Step 2: Convert to fraction form
    196,292/423,688 = 423,688/x
  3. Step 3: Cross multiply
    196,292x = 423,688 × 423,688
  4. Step 4: Simplify right side
    196,292x = 179,511,521,344
  5. Step 5: Solve for x
    x = 179,511,521,344/196,292
  6. Step 6: Final answer
    x = 914,512.67

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.