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Finding the Fourth Proportional to 8,993.22, 12,409.87 and 5,013.48

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Solution

The fourth proportional to 8,993.22, 12,409.87 and 5,013.48 is: 6,918.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.22 : 12,409.87 = 5,013.48 : x
  2. Step 2: Convert to fraction form
    8,993.22/12,409.87 = 5,013.48/x
  3. Step 3: Cross multiply
    8,993.22x = 12,409.87 × 5,013.48
  4. Step 4: Simplify right side
    8,993.22x = 62,216,635.05
  5. Step 5: Solve for x
    x = 62,216,635.05/8,993.22
  6. Step 6: Final answer
    x = 6,918.17

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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.