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Finding the Fourth Proportional to 9,012.15, 12,436.02 and 5,234.11

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Solution

The fourth proportional to 9,012.15, 12,436.02 and 5,234.11 is: 7,222.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.15 : 12,436.02 = 5,234.11 : x
  2. Step 2: Convert to fraction form
    9,012.15/12,436.02 = 5,234.11/x
  3. Step 3: Cross multiply
    9,012.15x = 12,436.02 × 5,234.11
  4. Step 4: Simplify right side
    9,012.15x = 65,091,496.64
  5. Step 5: Solve for x
    x = 65,091,496.64/9,012.15
  6. Step 6: Final answer
    x = 7,222.64

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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.