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Finding the Fourth Proportional to 38,354.60, 57,531.90 and 12,059.30

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Solution

The fourth proportional to 38,354.60, 57,531.90 and 12,059.30 is: 18,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,354.60 : 57,531.90 = 12,059.30 : x
  2. Step 2: Convert to fraction form
    38,354.60/57,531.90 = 12,059.30/x
  3. Step 3: Cross multiply
    38,354.60x = 57,531.90 × 12,059.30
  4. Step 4: Simplify right side
    38,354.60x = 693,794,441.67
  5. Step 5: Solve for x
    x = 693,794,441.67/38,354.60
  6. Step 6: Final answer
    x = 18,088.95

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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.