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Finding the Fourth Proportional to 21,995.52, 30,350.52 and 12,562.08

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Solution

The fourth proportional to 21,995.52, 30,350.52 and 12,562.08 is: 17,333.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.52 : 30,350.52 = 12,562.08 : x
  2. Step 2: Convert to fraction form
    21,995.52/30,350.52 = 12,562.08/x
  3. Step 3: Cross multiply
    21,995.52x = 30,350.52 × 12,562.08
  4. Step 4: Simplify right side
    21,995.52x = 381,265,660.28
  5. Step 5: Solve for x
    x = 381,265,660.28/21,995.52
  6. Step 6: Final answer
    x = 17,333.79

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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.