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Finding the Fourth Proportional to 19,842.15, 29,759.99 and 7,359.24

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Solution

The fourth proportional to 19,842.15, 29,759.99 and 7,359.24 is: 11,037.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,842.15 : 29,759.99 = 7,359.24 : x
  2. Step 2: Convert to fraction form
    19,842.15/29,759.99 = 7,359.24/x
  3. Step 3: Cross multiply
    19,842.15x = 29,759.99 × 7,359.24
  4. Step 4: Simplify right side
    19,842.15x = 219,010,908.81
  5. Step 5: Solve for x
    x = 219,010,908.81/19,842.15
  6. Step 6: Final answer
    x = 11,037.66

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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.