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Finding the Fourth Proportional to 104,390.80, 156,584.82 and 25,505.71

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Solution

The fourth proportional to 104,390.80, 156,584.82 and 25,505.71 is: 38,258.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,390.80 : 156,584.82 = 25,505.71 : x
  2. Step 2: Convert to fraction form
    104,390.80/156,584.82 = 25,505.71/x
  3. Step 3: Cross multiply
    104,390.80x = 156,584.82 × 25,505.71
  4. Step 4: Simplify right side
    104,390.80x = 3,993,806,713.51
  5. Step 5: Solve for x
    x = 3,993,806,713.51/104,390.80
  6. Step 6: Final answer
    x = 38,258.23

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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.