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Finding the Fourth Proportional to 7,862.85, 10,850.90 and 4,505.27

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Solution

The fourth proportional to 7,862.85, 10,850.90 and 4,505.27 is: 6,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,862.85 : 10,850.90 = 4,505.27 : x
  2. Step 2: Convert to fraction form
    7,862.85/10,850.90 = 4,505.27/x
  3. Step 3: Cross multiply
    7,862.85x = 10,850.90 × 4,505.27
  4. Step 4: Simplify right side
    7,862.85x = 48,886,157.46
  5. Step 5: Solve for x
    x = 48,886,157.46/7,862.85
  6. Step 6: Final answer
    x = 6,217.36

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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.