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Finding the Third Proportional to 71,971,248 and 156,721,057

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Solution

The third proportional to 71,971,248 and 156,721,057 is: 341,268,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,971,248 : 156,721,057 = 156,721,057 : x
  2. Step 2: Convert to fraction form
    71,971,248/156,721,057 = 156,721,057/x
  3. Step 3: Cross multiply
    71,971,248x = 156,721,057 × 156,721,057
  4. Step 4: Simplify right side
    71,971,248x = 24,561,489,707,197,248
  5. Step 5: Solve for x
    x = 24,561,489,707,197,248/71,971,248
  6. Step 6: Final answer
    x = 341,268,081.21

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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.