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Finding the Fourth Proportional to 8,993.84, 12,411.56 and 5,015.22

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Solution

The fourth proportional to 8,993.84, 12,411.56 and 5,015.22 is: 6,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.84 : 12,411.56 = 5,015.22 : x
  2. Step 2: Convert to fraction form
    8,993.84/12,411.56 = 5,015.22/x
  3. Step 3: Cross multiply
    8,993.84x = 12,411.56 × 5,015.22
  4. Step 4: Simplify right side
    8,993.84x = 62,246,669.94
  5. Step 5: Solve for x
    x = 62,246,669.94/8,993.84
  6. Step 6: Final answer
    x = 6,921.04

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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.