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Finding the Fourth Proportional to 38,187, 57,285.18 and 11,887.56

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Solution

The fourth proportional to 38,187, 57,285.18 and 11,887.56 is: 17,832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,187 : 57,285.18 = 11,887.56 : x
  2. Step 2: Convert to fraction form
    38,187/57,285.18 = 11,887.56/x
  3. Step 3: Cross multiply
    38,187x = 57,285.18 × 11,887.56
  4. Step 4: Simplify right side
    38,187x = 680,981,014.36
  5. Step 5: Solve for x
    x = 680,981,014.36/38,187
  6. Step 6: Final answer
    x = 17,832.80

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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.