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Finding the Fourth Proportional to 93,871.80, 140,807.70 and 82,207.80

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Solution

The fourth proportional to 93,871.80, 140,807.70 and 82,207.80 is: 123,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,871.80 : 140,807.70 = 82,207.80 : x
  2. Step 2: Convert to fraction form
    93,871.80/140,807.70 = 82,207.80/x
  3. Step 3: Cross multiply
    93,871.80x = 140,807.70 × 82,207.80
  4. Step 4: Simplify right side
    93,871.80x = 11,575,491,240.06
  5. Step 5: Solve for x
    x = 11,575,491,240.06/93,871.80
  6. Step 6: Final answer
    x = 123,311.70

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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.