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Finding the Fourth Proportional to 9,353.66, 12,908.02 and 5,161.88

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Solution

The fourth proportional to 9,353.66, 12,908.02 and 5,161.88 is: 7,123.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,353.66 : 12,908.02 = 5,161.88 : x
  2. Step 2: Convert to fraction form
    9,353.66/12,908.02 = 5,161.88/x
  3. Step 3: Cross multiply
    9,353.66x = 12,908.02 × 5,161.88
  4. Step 4: Simplify right side
    9,353.66x = 66,629,572.83
  5. Step 5: Solve for x
    x = 66,629,572.83/9,353.66
  6. Step 6: Final answer
    x = 7,123.37

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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.