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Finding the Fourth Proportional to 104,813.88, 144,645.71 and 57,069.82

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Solution

The fourth proportional to 104,813.88, 144,645.71 and 57,069.82 is: 78,757.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,813.88 : 144,645.71 = 57,069.82 : x
  2. Step 2: Convert to fraction form
    104,813.88/144,645.71 = 57,069.82/x
  3. Step 3: Cross multiply
    104,813.88x = 144,645.71 × 57,069.82
  4. Step 4: Simplify right side
    104,813.88x = 8,254,904,633.47
  5. Step 5: Solve for x
    x = 8,254,904,633.47/104,813.88
  6. Step 6: Final answer
    x = 78,757.74

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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.