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Finding the Third Proportional to 1,008,661.78 and 2,176,722.70

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Solution

The third proportional to 1,008,661.78 and 2,176,722.70 is: 4,697,433.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,661.78 : 2,176,722.70 = 2,176,722.70 : x
  2. Step 2: Convert to fraction form
    1,008,661.78/2,176,722.70 = 2,176,722.70/x
  3. Step 3: Cross multiply
    1,008,661.78x = 2,176,722.70 × 2,176,722.70
  4. Step 4: Simplify right side
    1,008,661.78x = 4,738,121,726,299.81
  5. Step 5: Solve for x
    x = 4,738,121,726,299.81/1,008,661.78
  6. Step 6: Final answer
    x = 4,697,433.58

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.