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Finding the Third Proportional to 292,436,578 and 642,272,078

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Solution

The third proportional to 292,436,578 and 642,272,078 is: 1,410,608,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,436,578 : 642,272,078 = 642,272,078 : x
  2. Step 2: Convert to fraction form
    292,436,578/642,272,078 = 642,272,078/x
  3. Step 3: Cross multiply
    292,436,578x = 642,272,078 × 642,272,078
  4. Step 4: Simplify right side
    292,436,578x = 412,513,422,178,438,080
  5. Step 5: Solve for x
    x = 412,513,422,178,438,080/292,436,578
  6. Step 6: Final answer
    x = 1,410,608,156.48

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.