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Finding the Fourth Proportional to 18,412.48, 27,603.12 and 8,016.32

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Solution

The fourth proportional to 18,412.48, 27,603.12 and 8,016.32 is: 12,017.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.48 : 27,603.12 = 8,016.32 : x
  2. Step 2: Convert to fraction form
    18,412.48/27,603.12 = 8,016.32/x
  3. Step 3: Cross multiply
    18,412.48x = 27,603.12 × 8,016.32
  4. Step 4: Simplify right side
    18,412.48x = 221,275,442.92
  5. Step 5: Solve for x
    x = 221,275,442.92/18,412.48
  6. Step 6: Final answer
    x = 12,017.69

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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.