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Finding the Fourth Proportional to 19,565.30, 27,000.12 and 11,181.80

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Solution

The fourth proportional to 19,565.30, 27,000.12 and 11,181.80 is: 15,430.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,565.30 : 27,000.12 = 11,181.80 : x
  2. Step 2: Convert to fraction form
    19,565.30/27,000.12 = 11,181.80/x
  3. Step 3: Cross multiply
    19,565.30x = 27,000.12 × 11,181.80
  4. Step 4: Simplify right side
    19,565.30x = 301,909,836.47
  5. Step 5: Solve for x
    x = 301,909,836.47/19,565.30
  6. Step 6: Final answer
    x = 15,430.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.