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Finding the Third Proportional to 20,581,859 and 28,221,618

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Solution

The third proportional to 20,581,859 and 28,221,618 is: 38,697,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581,859 : 28,221,618 = 28,221,618 : x
  2. Step 2: Convert to fraction form
    20,581,859/28,221,618 = 28,221,618/x
  3. Step 3: Cross multiply
    20,581,859x = 28,221,618 × 28,221,618
  4. Step 4: Simplify right side
    20,581,859x = 796,459,722,537,924
  5. Step 5: Solve for x
    x = 796,459,722,537,924/20,581,859
  6. Step 6: Final answer
    x = 38,697,171.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.