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Finding the Fourth Proportional to 38,385.89, 57,580.89 and 12,092.69

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Solution

The fourth proportional to 38,385.89, 57,580.89 and 12,092.69 is: 18,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,385.89 : 57,580.89 = 12,092.69 : x
  2. Step 2: Convert to fraction form
    38,385.89/57,580.89 = 12,092.69/x
  3. Step 3: Cross multiply
    38,385.89x = 57,580.89 × 12,092.69
  4. Step 4: Simplify right side
    38,385.89x = 696,307,852.69
  5. Step 5: Solve for x
    x = 696,307,852.69/38,385.89
  6. Step 6: Final answer
    x = 18,139.68

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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.