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Finding the Fourth Proportional to 335,712.30, 503,568.45 and 136,039.20

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Solution

The fourth proportional to 335,712.30, 503,568.45 and 136,039.20 is: 204,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,712.30 : 503,568.45 = 136,039.20 : x
  2. Step 2: Convert to fraction form
    335,712.30/503,568.45 = 136,039.20/x
  3. Step 3: Cross multiply
    335,712.30x = 503,568.45 × 136,039.20
  4. Step 4: Simplify right side
    335,712.30x = 68,505,049,083.24
  5. Step 5: Solve for x
    x = 68,505,049,083.24/335,712.30
  6. Step 6: Final answer
    x = 204,058.80

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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.