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Finding the Fourth Proportional to 93,425.20, 140,121.60 and 34,230.40

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Solution

The fourth proportional to 93,425.20, 140,121.60 and 34,230.40 is: 51,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,425.20 : 140,121.60 = 34,230.40 : x
  2. Step 2: Convert to fraction form
    93,425.20/140,121.60 = 34,230.40/x
  3. Step 3: Cross multiply
    93,425.20x = 140,121.60 × 34,230.40
  4. Step 4: Simplify right side
    93,425.20x = 4,796,418,416.64
  5. Step 5: Solve for x
    x = 4,796,418,416.64/93,425.20
  6. Step 6: Final answer
    x = 51,339.66

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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.