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Finding the Fourth Proportional to 38,648.56, 53,333.49 and 21,881.56

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Solution

The fourth proportional to 38,648.56, 53,333.49 and 21,881.56 is: 30,195.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,648.56 : 53,333.49 = 21,881.56 : x
  2. Step 2: Convert to fraction form
    38,648.56/53,333.49 = 21,881.56/x
  3. Step 3: Cross multiply
    38,648.56x = 53,333.49 × 21,881.56
  4. Step 4: Simplify right side
    38,648.56x = 1,167,019,961.44
  5. Step 5: Solve for x
    x = 1,167,019,961.44/38,648.56
  6. Step 6: Final answer
    x = 30,195.69

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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.