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Finding the Fourth Proportional to 236,834.20, 355,251.30 and 211,029.40

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Solution

The fourth proportional to 236,834.20, 355,251.30 and 211,029.40 is: 316,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,834.20 : 355,251.30 = 211,029.40 : x
  2. Step 2: Convert to fraction form
    236,834.20/355,251.30 = 211,029.40/x
  3. Step 3: Cross multiply
    236,834.20x = 355,251.30 × 211,029.40
  4. Step 4: Simplify right side
    236,834.20x = 74,968,468,688.22
  5. Step 5: Solve for x
    x = 74,968,468,688.22/236,834.20
  6. Step 6: Final answer
    x = 316,544.10

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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.