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Finding the Fourth Proportional to 7,861.32, 10,849.50 and 4,504.50

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Solution

The fourth proportional to 7,861.32, 10,849.50 and 4,504.50 is: 6,216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.32 : 10,849.50 = 4,504.50 : x
  2. Step 2: Convert to fraction form
    7,861.32/10,849.50 = 4,504.50/x
  3. Step 3: Cross multiply
    7,861.32x = 10,849.50 × 4,504.50
  4. Step 4: Simplify right side
    7,861.32x = 48,871,572.75
  5. Step 5: Solve for x
    x = 48,871,572.75/7,861.32
  6. Step 6: Final answer
    x = 6,216.71

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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.