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Finding the Fourth Proportional to 922,121.10, 1,383,181.65 and 916,216.20

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Solution

The fourth proportional to 922,121.10, 1,383,181.65 and 916,216.20 is: 1,374,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,121.10 : 1,383,181.65 = 916,216.20 : x
  2. Step 2: Convert to fraction form
    922,121.10/1,383,181.65 = 916,216.20/x
  3. Step 3: Cross multiply
    922,121.10x = 1,383,181.65 × 916,216.20
  4. Step 4: Simplify right side
    922,121.10x = 1,267,293,435,272.73
  5. Step 5: Solve for x
    x = 1,267,293,435,272.73/922,121.10
  6. Step 6: Final answer
    x = 1,374,324.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.