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Finding the Fourth Proportional to 5,915.64, 8,862.53 and 2,986.95

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Solution

The fourth proportional to 5,915.64, 8,862.53 and 2,986.95 is: 4,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.64 : 8,862.53 = 2,986.95 : x
  2. Step 2: Convert to fraction form
    5,915.64/8,862.53 = 2,986.95/x
  3. Step 3: Cross multiply
    5,915.64x = 8,862.53 × 2,986.95
  4. Step 4: Simplify right side
    5,915.64x = 26,471,919.05
  5. Step 5: Solve for x
    x = 26,471,919.05/5,915.64
  6. Step 6: Final answer
    x = 4,474.90

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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.