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Finding the Third Proportional to 314,930,326 and 687,167,178

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Solution

The third proportional to 314,930,326 and 687,167,178 is: 1,499,375,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,930,326 : 687,167,178 = 687,167,178 : x
  2. Step 2: Convert to fraction form
    314,930,326/687,167,178 = 687,167,178/x
  3. Step 3: Cross multiply
    314,930,326x = 687,167,178 × 687,167,178
  4. Step 4: Simplify right side
    314,930,326x = 472,198,730,520,483,712
  5. Step 5: Solve for x
    x = 472,198,730,520,483,712/314,930,326
  6. Step 6: Final answer
    x = 1,499,375,231.72

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.