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Finding the Fourth Proportional to 12,411.10, 18,616.62 and 5,015.48

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Solution

The fourth proportional to 12,411.10, 18,616.62 and 5,015.48 is: 7,523.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.10 : 18,616.62 = 5,015.48 : x
  2. Step 2: Convert to fraction form
    12,411.10/18,616.62 = 5,015.48/x
  3. Step 3: Cross multiply
    12,411.10x = 18,616.62 × 5,015.48
  4. Step 4: Simplify right side
    12,411.10x = 93,371,285.28
  5. Step 5: Solve for x
    x = 93,371,285.28/12,411.10
  6. Step 6: Final answer
    x = 7,523.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.