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Finding the Third Proportional to 18,911,718 and 28,367,772

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Solution

The third proportional to 18,911,718 and 28,367,772 is: 42,551,950.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911,718 : 28,367,772 = 28,367,772 : x
  2. Step 2: Convert to fraction form
    18,911,718/28,367,772 = 28,367,772/x
  3. Step 3: Cross multiply
    18,911,718x = 28,367,772 × 28,367,772
  4. Step 4: Simplify right side
    18,911,718x = 804,730,488,243,984
  5. Step 5: Solve for x
    x = 804,730,488,243,984/18,911,718
  6. Step 6: Final answer
    x = 42,551,950.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.