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Finding the Fourth Proportional to 339,889.44, 469,028.16 and 188,983.20

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Solution

The fourth proportional to 339,889.44, 469,028.16 and 188,983.20 is: 260,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,889.44 : 469,028.16 = 188,983.20 : x
  2. Step 2: Convert to fraction form
    339,889.44/469,028.16 = 188,983.20/x
  3. Step 3: Cross multiply
    339,889.44x = 469,028.16 × 188,983.20
  4. Step 4: Simplify right side
    339,889.44x = 88,638,442,566.91
  5. Step 5: Solve for x
    x = 88,638,442,566.91/339,889.44
  6. Step 6: Final answer
    x = 260,786.10

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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.