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Finding the Fourth Proportional to 38,858.78, 53,625.02 and 21,863.01

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Solution

The fourth proportional to 38,858.78, 53,625.02 and 21,863.01 is: 30,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,858.78 : 53,625.02 = 21,863.01 : x
  2. Step 2: Convert to fraction form
    38,858.78/53,625.02 = 21,863.01/x
  3. Step 3: Cross multiply
    38,858.78x = 53,625.02 × 21,863.01
  4. Step 4: Simplify right side
    38,858.78x = 1,172,404,239.20
  5. Step 5: Solve for x
    x = 1,172,404,239.20/38,858.78
  6. Step 6: Final answer
    x = 30,170.90

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1.5x scale

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.