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Finding the Fourth Proportional to 39,315.52, 54,255.04 and 21,410.48

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Solution

The fourth proportional to 39,315.52, 54,255.04 and 21,410.48 is: 29,546.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,315.52 : 54,255.04 = 21,410.48 : x
  2. Step 2: Convert to fraction form
    39,315.52/54,255.04 = 21,410.48/x
  3. Step 3: Cross multiply
    39,315.52x = 54,255.04 × 21,410.48
  4. Step 4: Simplify right side
    39,315.52x = 1,161,626,448.82
  5. Step 5: Solve for x
    x = 1,161,626,448.82/39,315.52
  6. Step 6: Final answer
    x = 29,546.26

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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.