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Finding the Fourth Proportional to 38,633.90, 57,938.56 and 19,911.56

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Solution

The fourth proportional to 38,633.90, 57,938.56 and 19,911.56 is: 29,861.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,633.90 : 57,938.56 = 19,911.56 : x
  2. Step 2: Convert to fraction form
    38,633.90/57,938.56 = 19,911.56/x
  3. Step 3: Cross multiply
    38,633.90x = 57,938.56 × 19,911.56
  4. Step 4: Simplify right side
    38,633.90x = 1,153,647,113.75
  5. Step 5: Solve for x
    x = 1,153,647,113.75/38,633.90
  6. Step 6: Final answer
    x = 29,861.01

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1.5x scale

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.