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Finding the Fourth Proportional to 7,896.87, 10,897.20 and 4,311.11

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Solution

The fourth proportional to 7,896.87, 10,897.20 and 4,311.11 is: 5,949.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.87 : 10,897.20 = 4,311.11 : x
  2. Step 2: Convert to fraction form
    7,896.87/10,897.20 = 4,311.11/x
  3. Step 3: Cross multiply
    7,896.87x = 10,897.20 × 4,311.11
  4. Step 4: Simplify right side
    7,896.87x = 46,978,973.41
  5. Step 5: Solve for x
    x = 46,978,973.41/7,896.87
  6. Step 6: Final answer
    x = 5,949.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.