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Finding the Fourth Proportional to 1,345,405, 1,856,673.42 and 733,552.78

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Solution

The fourth proportional to 1,345,405, 1,856,673.42 and 733,552.78 is: 1,012,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,405 : 1,856,673.42 = 733,552.78 : x
  2. Step 2: Convert to fraction form
    1,345,405/1,856,673.42 = 733,552.78/x
  3. Step 3: Cross multiply
    1,345,405x = 1,856,673.42 × 733,552.78
  4. Step 4: Simplify right side
    1,345,405x = 1,361,967,948,793.11
  5. Step 5: Solve for x
    x = 1,361,967,948,793.11/1,345,405
  6. Step 6: Final answer
    x = 1,012,310.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.