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Finding the Fourth Proportional to 18,853.36, 28,241.78 and 8,842.98

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Solution

The fourth proportional to 18,853.36, 28,241.78 and 8,842.98 is: 13,246.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.36 : 28,241.78 = 8,842.98 : x
  2. Step 2: Convert to fraction form
    18,853.36/28,241.78 = 8,842.98/x
  3. Step 3: Cross multiply
    18,853.36x = 28,241.78 × 8,842.98
  4. Step 4: Simplify right side
    18,853.36x = 249,741,495.70
  5. Step 5: Solve for x
    x = 249,741,495.70/18,853.36
  6. Step 6: Final answer
    x = 13,246.52

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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.