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Finding the Fourth Proportional to 5,338.55, 8,047.87 and 4,981.75

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Solution

The fourth proportional to 5,338.55, 8,047.87 and 4,981.75 is: 7,509.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,338.55 : 8,047.87 = 4,981.75 : x
  2. Step 2: Convert to fraction form
    5,338.55/8,047.87 = 4,981.75/x
  3. Step 3: Cross multiply
    5,338.55x = 8,047.87 × 4,981.75
  4. Step 4: Simplify right side
    5,338.55x = 40,092,476.37
  5. Step 5: Solve for x
    x = 40,092,476.37/5,338.55
  6. Step 6: Final answer
    x = 7,509.99

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.