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Finding the Fourth Proportional to 469,416.31, 647,794.67 and 254,556.32

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Solution

The fourth proportional to 469,416.31, 647,794.67 and 254,556.32 is: 351,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,416.31 : 647,794.67 = 254,556.32 : x
  2. Step 2: Convert to fraction form
    469,416.31/647,794.67 = 254,556.32/x
  3. Step 3: Cross multiply
    469,416.31x = 647,794.67 × 254,556.32
  4. Step 4: Simplify right side
    469,416.31x = 164,900,222,799.06
  5. Step 5: Solve for x
    x = 164,900,222,799.06/469,416.31
  6. Step 6: Final answer
    x = 351,287.80

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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.