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Finding the Fourth Proportional to 13,375.72, 20,068.16 and 5,058.12

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Solution

The fourth proportional to 13,375.72, 20,068.16 and 5,058.12 is: 7,588.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.72 : 20,068.16 = 5,058.12 : x
  2. Step 2: Convert to fraction form
    13,375.72/20,068.16 = 5,058.12/x
  3. Step 3: Cross multiply
    13,375.72x = 20,068.16 × 5,058.12
  4. Step 4: Simplify right side
    13,375.72x = 101,507,161.46
  5. Step 5: Solve for x
    x = 101,507,161.46/13,375.72
  6. Step 6: Final answer
    x = 7,588.91

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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.