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Finding the Third Proportional to 1,866,651 and 3,989,178

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Solution

The third proportional to 1,866,651 and 3,989,178 is: 8,525,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,651 : 3,989,178 = 3,989,178 : x
  2. Step 2: Convert to fraction form
    1,866,651/3,989,178 = 3,989,178/x
  3. Step 3: Cross multiply
    1,866,651x = 3,989,178 × 3,989,178
  4. Step 4: Simplify right side
    1,866,651x = 15,913,541,115,684
  5. Step 5: Solve for x
    x = 15,913,541,115,684/1,866,651
  6. Step 6: Final answer
    x = 8,525,182.86

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.