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Finding the Third Proportional to 98,431,528 and 215,390,834

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Solution

The third proportional to 98,431,528 and 215,390,834 is: 471,324,709.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,431,528 : 215,390,834 = 215,390,834 : x
  2. Step 2: Convert to fraction form
    98,431,528/215,390,834 = 215,390,834/x
  3. Step 3: Cross multiply
    98,431,528x = 215,390,834 × 215,390,834
  4. Step 4: Simplify right side
    98,431,528x = 46,393,211,371,215,552
  5. Step 5: Solve for x
    x = 46,393,211,371,215,552/98,431,528
  6. Step 6: Final answer
    x = 471,324,709.81

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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.