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Finding the Fourth Proportional to 439,398.87, 606,362.40 and 248,412.31

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Solution

The fourth proportional to 439,398.87, 606,362.40 and 248,412.31 is: 342,804.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,398.87 : 606,362.40 = 248,412.31 : x
  2. Step 2: Convert to fraction form
    439,398.87/606,362.40 = 248,412.31/x
  3. Step 3: Cross multiply
    439,398.87x = 606,362.40 × 248,412.31
  4. Step 4: Simplify right side
    439,398.87x = 150,627,884,481.14
  5. Step 5: Solve for x
    x = 150,627,884,481.14/439,398.87
  6. Step 6: Final answer
    x = 342,804.44

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1.5x scale

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.