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Finding the Fourth Proportional to 13,695.63, 20,531.11 and 4,924.38

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Solution

The fourth proportional to 13,695.63, 20,531.11 and 4,924.38 is: 7,382.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.63 : 20,531.11 = 4,924.38 : x
  2. Step 2: Convert to fraction form
    13,695.63/20,531.11 = 4,924.38/x
  3. Step 3: Cross multiply
    13,695.63x = 20,531.11 × 4,924.38
  4. Step 4: Simplify right side
    13,695.63x = 101,102,987.46
  5. Step 5: Solve for x
    x = 101,102,987.46/13,695.63
  6. Step 6: Final answer
    x = 7,382.13

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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.