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Finding the Fourth Proportional to 13,901.67, 20,852.42 and 3,513.42

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Solution

The fourth proportional to 13,901.67, 20,852.42 and 3,513.42 is: 5,270.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.67 : 20,852.42 = 3,513.42 : x
  2. Step 2: Convert to fraction form
    13,901.67/20,852.42 = 3,513.42/x
  3. Step 3: Cross multiply
    13,901.67x = 20,852.42 × 3,513.42
  4. Step 4: Simplify right side
    13,901.67x = 73,263,291.91
  5. Step 5: Solve for x
    x = 73,263,291.91/13,901.67
  6. Step 6: Final answer
    x = 5,270.11

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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.