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Finding the Fourth Proportional to 18,293.60, 27,438.24 and 5,813.60

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Solution

The fourth proportional to 18,293.60, 27,438.24 and 5,813.60 is: 8,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.60 : 27,438.24 = 5,813.60 : x
  2. Step 2: Convert to fraction form
    18,293.60/27,438.24 = 5,813.60/x
  3. Step 3: Cross multiply
    18,293.60x = 27,438.24 × 5,813.60
  4. Step 4: Simplify right side
    18,293.60x = 159,514,952.06
  5. Step 5: Solve for x
    x = 159,514,952.06/18,293.60
  6. Step 6: Final answer
    x = 8,719.71

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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.