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Finding the Fourth Proportional to 231,323.49, 347,037.48 and 81,574.74

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Solution

The fourth proportional to 231,323.49, 347,037.48 and 81,574.74 is: 122,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,323.49 : 347,037.48 = 81,574.74 : x
  2. Step 2: Convert to fraction form
    231,323.49/347,037.48 = 81,574.74/x
  3. Step 3: Cross multiply
    231,323.49x = 347,037.48 × 81,574.74
  4. Step 4: Simplify right side
    231,323.49x = 28,309,492,201.26
  5. Step 5: Solve for x
    x = 28,309,492,201.26/231,323.49
  6. Step 6: Final answer
    x = 122,380.53

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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.