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Finding the Fourth Proportional to 19,361.57, 29,044.08 and 7,515.06

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Solution

The fourth proportional to 19,361.57, 29,044.08 and 7,515.06 is: 11,273.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.57 : 29,044.08 = 7,515.06 : x
  2. Step 2: Convert to fraction form
    19,361.57/29,044.08 = 7,515.06/x
  3. Step 3: Cross multiply
    19,361.57x = 29,044.08 × 7,515.06
  4. Step 4: Simplify right side
    19,361.57x = 218,268,003.84
  5. Step 5: Solve for x
    x = 218,268,003.84/19,361.57
  6. Step 6: Final answer
    x = 11,273.26

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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.