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Finding the Fourth Proportional to 13,803.77, 20,689.48 and 5,903.99

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Solution

The fourth proportional to 13,803.77, 20,689.48 and 5,903.99 is: 8,849.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.77 : 20,689.48 = 5,903.99 : x
  2. Step 2: Convert to fraction form
    13,803.77/20,689.48 = 5,903.99/x
  3. Step 3: Cross multiply
    13,803.77x = 20,689.48 × 5,903.99
  4. Step 4: Simplify right side
    13,803.77x = 122,150,431.33
  5. Step 5: Solve for x
    x = 122,150,431.33/13,803.77
  6. Step 6: Final answer
    x = 8,849.07

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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.