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Finding the Fourth Proportional to 5,372.99, 8,061.30 and 4,855.40

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Solution

The fourth proportional to 5,372.99, 8,061.30 and 4,855.40 is: 7,284.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,372.99 : 8,061.30 = 4,855.40 : x
  2. Step 2: Convert to fraction form
    5,372.99/8,061.30 = 4,855.40/x
  3. Step 3: Cross multiply
    5,372.99x = 8,061.30 × 4,855.40
  4. Step 4: Simplify right side
    5,372.99x = 39,140,836.02
  5. Step 5: Solve for x
    x = 39,140,836.02/5,372.99
  6. Step 6: Final answer
    x = 7,284.74

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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.