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Finding the Fourth Proportional to 866,906.40, 1,300,359.60 and 814,418.40

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Solution

The fourth proportional to 866,906.40, 1,300,359.60 and 814,418.40 is: 1,221,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,906.40 : 1,300,359.60 = 814,418.40 : x
  2. Step 2: Convert to fraction form
    866,906.40/1,300,359.60 = 814,418.40/x
  3. Step 3: Cross multiply
    866,906.40x = 1,300,359.60 × 814,418.40
  4. Step 4: Simplify right side
    866,906.40x = 1,059,036,784,856.64
  5. Step 5: Solve for x
    x = 1,059,036,784,856.64/866,906.40
  6. Step 6: Final answer
    x = 1,221,627.60

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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.