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Finding the Fourth Proportional to 13,903.42, 20,857.18 and 4,041.42

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Solution

The fourth proportional to 13,903.42, 20,857.18 and 4,041.42 is: 6,062.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.42 : 20,857.18 = 4,041.42 : x
  2. Step 2: Convert to fraction form
    13,903.42/20,857.18 = 4,041.42/x
  3. Step 3: Cross multiply
    13,903.42x = 20,857.18 × 4,041.42
  4. Step 4: Simplify right side
    13,903.42x = 84,292,624.40
  5. Step 5: Solve for x
    x = 84,292,624.40/13,903.42
  6. Step 6: Final answer
    x = 6,062.73

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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.