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Finding the Fourth Proportional to 13,072.41, 18,040.03 and 7,104.08

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Solution

The fourth proportional to 13,072.41, 18,040.03 and 7,104.08 is: 9,803.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.41 : 18,040.03 = 7,104.08 : x
  2. Step 2: Convert to fraction form
    13,072.41/18,040.03 = 7,104.08/x
  3. Step 3: Cross multiply
    13,072.41x = 18,040.03 × 7,104.08
  4. Step 4: Simplify right side
    13,072.41x = 128,157,843.66
  5. Step 5: Solve for x
    x = 128,157,843.66/13,072.41
  6. Step 6: Final answer
    x = 9,803.69

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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.