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Finding the Fourth Proportional to 19,693.10, 29,529.38 and 9,693.66

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Solution

The fourth proportional to 19,693.10, 29,529.38 and 9,693.66 is: 14,535.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,693.10 : 29,529.38 = 9,693.66 : x
  2. Step 2: Convert to fraction form
    19,693.10/29,529.38 = 9,693.66/x
  3. Step 3: Cross multiply
    19,693.10x = 29,529.38 × 9,693.66
  4. Step 4: Simplify right side
    19,693.10x = 286,247,769.73
  5. Step 5: Solve for x
    x = 286,247,769.73/19,693.10
  6. Step 6: Final answer
    x = 14,535.43

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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.