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Finding the Fourth Proportional to 38,429.44, 53,032.62 and 21,662.44

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Solution

The fourth proportional to 38,429.44, 53,032.62 and 21,662.44 is: 29,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,429.44 : 53,032.62 = 21,662.44 : x
  2. Step 2: Convert to fraction form
    38,429.44/53,032.62 = 21,662.44/x
  3. Step 3: Cross multiply
    38,429.44x = 53,032.62 × 21,662.44
  4. Step 4: Simplify right side
    38,429.44x = 1,148,815,897.45
  5. Step 5: Solve for x
    x = 1,148,815,897.45/38,429.44
  6. Step 6: Final answer
    x = 29,894.16

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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.