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Finding the Fourth Proportional to 12,772.80, 17,623.02 and 7,468.92

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Solution

The fourth proportional to 12,772.80, 17,623.02 and 7,468.92 is: 10,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.80 : 17,623.02 = 7,468.92 : x
  2. Step 2: Convert to fraction form
    12,772.80/17,623.02 = 7,468.92/x
  3. Step 3: Cross multiply
    12,772.80x = 17,623.02 × 7,468.92
  4. Step 4: Simplify right side
    12,772.80x = 131,624,926.54
  5. Step 5: Solve for x
    x = 131,624,926.54/12,772.80
  6. Step 6: Final answer
    x = 10,305.10

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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.