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Finding the Fourth Proportional to 19,690.00, 29,502.11 and 13,836.13

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Solution

The fourth proportional to 19,690.00, 29,502.11 and 13,836.13 is: 20,731.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.00 : 29,502.11 = 13,836.13 : x
  2. Step 2: Convert to fraction form
    19,690.00/29,502.11 = 13,836.13/x
  3. Step 3: Cross multiply
    19,690.00x = 29,502.11 × 13,836.13
  4. Step 4: Simplify right side
    19,690.00x = 408,194,881.72
  5. Step 5: Solve for x
    x = 408,194,881.72/19,690.00
  6. Step 6: Final answer
    x = 20,731.08

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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.