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Finding the Fourth Proportional to 13,059.11, 18,021.36 and 7,394.93

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Solution

The fourth proportional to 13,059.11, 18,021.36 and 7,394.93 is: 10,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.11 : 18,021.36 = 7,394.93 : x
  2. Step 2: Convert to fraction form
    13,059.11/18,021.36 = 7,394.93/x
  3. Step 3: Cross multiply
    13,059.11x = 18,021.36 × 7,394.93
  4. Step 4: Simplify right side
    13,059.11x = 133,266,695.70
  5. Step 5: Solve for x
    x = 133,266,695.70/13,059.11
  6. Step 6: Final answer
    x = 10,204.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.