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Finding the Fourth Proportional to 38,553.36, 53,199.36 and 21,786.36

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Solution

The fourth proportional to 38,553.36, 53,199.36 and 21,786.36 is: 30,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,553.36 : 53,199.36 = 21,786.36 : x
  2. Step 2: Convert to fraction form
    38,553.36/53,199.36 = 21,786.36/x
  3. Step 3: Cross multiply
    38,553.36x = 53,199.36 × 21,786.36
  4. Step 4: Simplify right side
    38,553.36x = 1,159,020,408.73
  5. Step 5: Solve for x
    x = 1,159,020,408.73/38,553.36
  6. Step 6: Final answer
    x = 30,062.76

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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.