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Finding the Third Proportional to 18,839,818 and 40,566,428

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Solution

The third proportional to 18,839,818 and 40,566,428 is: 87,348,778.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,839,818 : 40,566,428 = 40,566,428 : x
  2. Step 2: Convert to fraction form
    18,839,818/40,566,428 = 40,566,428/x
  3. Step 3: Cross multiply
    18,839,818x = 40,566,428 × 40,566,428
  4. Step 4: Simplify right side
    18,839,818x = 1,645,635,080,679,184
  5. Step 5: Solve for x
    x = 1,645,635,080,679,184/18,839,818
  6. Step 6: Final answer
    x = 87,348,778.03

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.