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Finding the Fourth Proportional to 39,804.64, 59,686.36 and 11,721.04

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Solution

The fourth proportional to 39,804.64, 59,686.36 and 11,721.04 is: 17,575.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.64 : 59,686.36 = 11,721.04 : x
  2. Step 2: Convert to fraction form
    39,804.64/59,686.36 = 11,721.04/x
  3. Step 3: Cross multiply
    39,804.64x = 59,686.36 × 11,721.04
  4. Step 4: Simplify right side
    39,804.64x = 699,586,213.01
  5. Step 5: Solve for x
    x = 699,586,213.01/39,804.64
  6. Step 6: Final answer
    x = 17,575.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.