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Finding the Third Proportional to 1,129,691.81 and 2,488,547.81

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Solution

The third proportional to 1,129,691.81 and 2,488,547.81 is: 5,481,911.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,691.81 : 2,488,547.81 = 2,488,547.81 : x
  2. Step 2: Convert to fraction form
    1,129,691.81/2,488,547.81 = 2,488,547.81/x
  3. Step 3: Cross multiply
    1,129,691.81x = 2,488,547.81 × 2,488,547.81
  4. Step 4: Simplify right side
    1,129,691.81x = 6,192,870,215,098.54
  5. Step 5: Solve for x
    x = 6,192,870,215,098.54/1,129,691.81
  6. Step 6: Final answer
    x = 5,481,911.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.