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Finding the Third Proportional to 1,778,843.53 and 3,911,920.31

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Solution

The third proportional to 1,778,843.53 and 3,911,920.31 is: 8,602,848.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778,843.53 : 3,911,920.31 = 3,911,920.31 : x
  2. Step 2: Convert to fraction form
    1,778,843.53/3,911,920.31 = 3,911,920.31/x
  3. Step 3: Cross multiply
    1,778,843.53x = 3,911,920.31 × 3,911,920.31
  4. Step 4: Simplify right side
    1,778,843.53x = 15,303,120,531,350.10
  5. Step 5: Solve for x
    x = 15,303,120,531,350.10/1,778,843.53
  6. Step 6: Final answer
    x = 8,602,848.01

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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.