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Finding the Fourth Proportional to 526,813.36, 789,530.88 and 211,491.52

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Solution

The fourth proportional to 526,813.36, 789,530.88 and 211,491.52 is: 316,960.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,813.36 : 789,530.88 = 211,491.52 : x
  2. Step 2: Convert to fraction form
    526,813.36/789,530.88 = 211,491.52/x
  3. Step 3: Cross multiply
    526,813.36x = 789,530.88 × 211,491.52
  4. Step 4: Simplify right side
    526,813.36x = 166,979,085,898.14
  5. Step 5: Solve for x
    x = 166,979,085,898.14/526,813.36
  6. Step 6: Final answer
    x = 316,960.61

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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.