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Finding the Fourth Proportional to 133,000.40, 183,540.56 and 85,253.85

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Solution

The fourth proportional to 133,000.40, 183,540.56 and 85,253.85 is: 117,650.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,000.40 : 183,540.56 = 85,253.85 : x
  2. Step 2: Convert to fraction form
    133,000.40/183,540.56 = 85,253.85/x
  3. Step 3: Cross multiply
    133,000.40x = 183,540.56 × 85,253.85
  4. Step 4: Simplify right side
    133,000.40x = 15,647,538,944.89
  5. Step 5: Solve for x
    x = 15,647,538,944.89/133,000.40
  6. Step 6: Final answer
    x = 117,650.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.