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Finding the Fourth Proportional to 12,816.10, 19,224.15 and 12,816.10

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Solution

The fourth proportional to 12,816.10, 19,224.15 and 12,816.10 is: 19,224.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.10 : 19,224.15 = 12,816.10 : x
  2. Step 2: Convert to fraction form
    12,816.10/19,224.15 = 12,816.10/x
  3. Step 3: Cross multiply
    12,816.10x = 19,224.15 × 12,816.10
  4. Step 4: Simplify right side
    12,816.10x = 246,378,628.82
  5. Step 5: Solve for x
    x = 246,378,628.82/12,816.10
  6. Step 6: Final answer
    x = 19,224.15

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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.