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Finding the Fourth Proportional to 9,163.52, 12,645.68 and 4,971.77

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Solution

The fourth proportional to 9,163.52, 12,645.68 and 4,971.77 is: 6,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.52 : 12,645.68 = 4,971.77 : x
  2. Step 2: Convert to fraction form
    9,163.52/12,645.68 = 4,971.77/x
  3. Step 3: Cross multiply
    9,163.52x = 12,645.68 × 4,971.77
  4. Step 4: Simplify right side
    9,163.52x = 62,871,324.37
  5. Step 5: Solve for x
    x = 62,871,324.37/9,163.52
  6. Step 6: Final answer
    x = 6,861.05

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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.