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Finding the Fourth Proportional to 18,393.94, 27,590.32 and 5,246.31

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Solution

The fourth proportional to 18,393.94, 27,590.32 and 5,246.31 is: 7,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.94 : 27,590.32 = 5,246.31 : x
  2. Step 2: Convert to fraction form
    18,393.94/27,590.32 = 5,246.31/x
  3. Step 3: Cross multiply
    18,393.94x = 27,590.32 × 5,246.31
  4. Step 4: Simplify right side
    18,393.94x = 144,747,371.72
  5. Step 5: Solve for x
    x = 144,747,371.72/18,393.94
  6. Step 6: Final answer
    x = 7,869.30

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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.