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Finding the Fourth Proportional to 38,153.70, 57,230.01 and 11,858.40

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Solution

The fourth proportional to 38,153.70, 57,230.01 and 11,858.40 is: 17,787.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,153.70 : 57,230.01 = 11,858.40 : x
  2. Step 2: Convert to fraction form
    38,153.70/57,230.01 = 11,858.40/x
  3. Step 3: Cross multiply
    38,153.70x = 57,230.01 × 11,858.40
  4. Step 4: Simplify right side
    38,153.70x = 678,656,350.58
  5. Step 5: Solve for x
    x = 678,656,350.58/38,153.70
  6. Step 6: Final answer
    x = 17,787.43

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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.