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Finding the Fourth Proportional to 7,643.99, 10,544.23 and 4,806.87

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Solution

The fourth proportional to 7,643.99, 10,544.23 and 4,806.87 is: 6,630.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.99 : 10,544.23 = 4,806.87 : x
  2. Step 2: Convert to fraction form
    7,643.99/10,544.23 = 4,806.87/x
  3. Step 3: Cross multiply
    7,643.99x = 10,544.23 × 4,806.87
  4. Step 4: Simplify right side
    7,643.99x = 50,684,742.86
  5. Step 5: Solve for x
    x = 50,684,742.86/7,643.99
  6. Step 6: Final answer
    x = 6,630.67

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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.