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Finding the Fourth Proportional to 56,907.30, 85,352.85 and 19,469.10

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Solution

The fourth proportional to 56,907.30, 85,352.85 and 19,469.10 is: 29,200.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,907.30 : 85,352.85 = 19,469.10 : x
  2. Step 2: Convert to fraction form
    56,907.30/85,352.85 = 19,469.10/x
  3. Step 3: Cross multiply
    56,907.30x = 85,352.85 × 19,469.10
  4. Step 4: Simplify right side
    56,907.30x = 1,661,743,171.94
  5. Step 5: Solve for x
    x = 1,661,743,171.94/56,907.30
  6. Step 6: Final answer
    x = 29,200.88

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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.