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Finding the Fourth Proportional to 74,676.51, 112,032.72 and 21,369.33

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Solution

The fourth proportional to 74,676.51, 112,032.72 and 21,369.33 is: 32,059.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,676.51 : 112,032.72 = 21,369.33 : x
  2. Step 2: Convert to fraction form
    74,676.51/112,032.72 = 21,369.33/x
  3. Step 3: Cross multiply
    74,676.51x = 112,032.72 × 21,369.33
  4. Step 4: Simplify right side
    74,676.51x = 2,394,064,164.48
  5. Step 5: Solve for x
    x = 2,394,064,164.48/74,676.51
  6. Step 6: Final answer
    x = 32,059.13

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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.