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Finding the Fourth Proportional to 18,593.51, 27,890.27 and 4,742.51

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Solution

The fourth proportional to 18,593.51, 27,890.27 and 4,742.51 is: 7,113.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.51 : 27,890.27 = 4,742.51 : x
  2. Step 2: Convert to fraction form
    18,593.51/27,890.27 = 4,742.51/x
  3. Step 3: Cross multiply
    18,593.51x = 27,890.27 × 4,742.51
  4. Step 4: Simplify right side
    18,593.51x = 132,269,860.67
  5. Step 5: Solve for x
    x = 132,269,860.67/18,593.51
  6. Step 6: Final answer
    x = 7,113.77

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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.