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Finding the Fourth Proportional to 18,744.56, 28,116.28 and 4,893.56

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Solution

The fourth proportional to 18,744.56, 28,116.28 and 4,893.56 is: 7,340.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.56 : 28,116.28 = 4,893.56 : x
  2. Step 2: Convert to fraction form
    18,744.56/28,116.28 = 4,893.56/x
  3. Step 3: Cross multiply
    18,744.56x = 28,116.28 × 4,893.56
  4. Step 4: Simplify right side
    18,744.56x = 137,588,703.16
  5. Step 5: Solve for x
    x = 137,588,703.16/18,744.56
  6. Step 6: Final answer
    x = 7,340.19

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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.