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Finding the Fourth Proportional to 12,562.80, 18,844.20 and 3,328.08

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Solution

The fourth proportional to 12,562.80, 18,844.20 and 3,328.08 is: 4,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,562.80 : 18,844.20 = 3,328.08 : x
  2. Step 2: Convert to fraction form
    12,562.80/18,844.20 = 3,328.08/x
  3. Step 3: Cross multiply
    12,562.80x = 18,844.20 × 3,328.08
  4. Step 4: Simplify right side
    12,562.80x = 62,715,005.14
  5. Step 5: Solve for x
    x = 62,715,005.14/12,562.80
  6. Step 6: Final answer
    x = 4,992.12

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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.