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Finding the Fourth Proportional to 8,749.80, 12,074.73 and 4,770.92

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Solution

The fourth proportional to 8,749.80, 12,074.73 and 4,770.92 is: 6,583.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.80 : 12,074.73 = 4,770.92 : x
  2. Step 2: Convert to fraction form
    8,749.80/12,074.73 = 4,770.92/x
  3. Step 3: Cross multiply
    8,749.80x = 12,074.73 × 4,770.92
  4. Step 4: Simplify right side
    8,749.80x = 57,607,570.85
  5. Step 5: Solve for x
    x = 57,607,570.85/8,749.80
  6. Step 6: Final answer
    x = 6,583.87

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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.