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Finding the Fourth Proportional to 126,361.64, 174,359.24 and 72,636.62

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Solution

The fourth proportional to 126,361.64, 174,359.24 and 72,636.62 is: 100,227.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,361.64 : 174,359.24 = 72,636.62 : x
  2. Step 2: Convert to fraction form
    126,361.64/174,359.24 = 72,636.62/x
  3. Step 3: Cross multiply
    126,361.64x = 174,359.24 × 72,636.62
  4. Step 4: Simplify right side
    126,361.64x = 12,664,865,823.01
  5. Step 5: Solve for x
    x = 12,664,865,823.01/126,361.64
  6. Step 6: Final answer
    x = 100,227.14

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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.