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Finding the Fourth Proportional to 39,893.10, 55,051.02 and 23,979.03

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Solution

The fourth proportional to 39,893.10, 55,051.02 and 23,979.03 is: 33,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,893.10 : 55,051.02 = 23,979.03 : x
  2. Step 2: Convert to fraction form
    39,893.10/55,051.02 = 23,979.03/x
  3. Step 3: Cross multiply
    39,893.10x = 55,051.02 × 23,979.03
  4. Step 4: Simplify right side
    39,893.10x = 1,320,070,060.11
  5. Step 5: Solve for x
    x = 1,320,070,060.11/39,893.10
  6. Step 6: Final answer
    x = 33,090.19

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Why These Related Problems?

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