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Finding the Fourth Proportional to 16,643.75, 24,966.18 and 7,278.98

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Solution

The fourth proportional to 16,643.75, 24,966.18 and 7,278.98 is: 10,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,643.75 : 24,966.18 = 7,278.98 : x
  2. Step 2: Convert to fraction form
    16,643.75/24,966.18 = 7,278.98/x
  3. Step 3: Cross multiply
    16,643.75x = 24,966.18 × 7,278.98
  4. Step 4: Simplify right side
    16,643.75x = 181,728,200.07
  5. Step 5: Solve for x
    x = 181,728,200.07/16,643.75
  6. Step 6: Final answer
    x = 10,918.71

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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.