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Finding the Fourth Proportional to 13,016.21, 17,961.64 and 7,352.11

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Solution

The fourth proportional to 13,016.21, 17,961.64 and 7,352.11 is: 10,145.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,016.21 : 17,961.64 = 7,352.11 : x
  2. Step 2: Convert to fraction form
    13,016.21/17,961.64 = 7,352.11/x
  3. Step 3: Cross multiply
    13,016.21x = 17,961.64 × 7,352.11
  4. Step 4: Simplify right side
    13,016.21x = 132,055,957.13
  5. Step 5: Solve for x
    x = 132,055,957.13/13,016.21
  6. Step 6: Final answer
    x = 10,145.50

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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.