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Finding the Fourth Proportional to 335,865.40, 503,360.70 and 136,022.20

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Solution

The fourth proportional to 335,865.40, 503,360.70 and 136,022.20 is: 203,856.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,865.40 : 503,360.70 = 136,022.20 : x
  2. Step 2: Convert to fraction form
    335,865.40/503,360.70 = 136,022.20/x
  3. Step 3: Cross multiply
    335,865.40x = 503,360.70 × 136,022.20
  4. Step 4: Simplify right side
    335,865.40x = 68,468,229,807.54
  5. Step 5: Solve for x
    x = 68,468,229,807.54/335,865.40
  6. Step 6: Final answer
    x = 203,856.16

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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.