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Finding the Fourth Proportional to 393,212.52, 589,857.12 and 156,499.92

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Solution

The fourth proportional to 393,212.52, 589,857.12 and 156,499.92 is: 234,765.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,212.52 : 589,857.12 = 156,499.92 : x
  2. Step 2: Convert to fraction form
    393,212.52/589,857.12 = 156,499.92/x
  3. Step 3: Cross multiply
    393,212.52x = 589,857.12 × 156,499.92
  4. Step 4: Simplify right side
    393,212.52x = 92,312,592,091.43
  5. Step 5: Solve for x
    x = 92,312,592,091.43/393,212.52
  6. Step 6: Final answer
    x = 234,765.14

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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.