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Finding the Third Proportional to 287,892,237 and 621,658,122

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Solution

The third proportional to 287,892,237 and 621,658,122 is: 1,342,373,190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,892,237 : 621,658,122 = 621,658,122 : x
  2. Step 2: Convert to fraction form
    287,892,237/621,658,122 = 621,658,122/x
  3. Step 3: Cross multiply
    287,892,237x = 621,658,122 × 621,658,122
  4. Step 4: Simplify right side
    287,892,237x = 386,458,820,648,566,912
  5. Step 5: Solve for x
    x = 386,458,820,648,566,912/287,892,237
  6. Step 6: Final answer
    x = 1,342,373,190.31

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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.