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Finding the Fourth Proportional to 79,511.54, 109,726.77 and 43,212.98

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Solution

The fourth proportional to 79,511.54, 109,726.77 and 43,212.98 is: 59,634.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.54 : 109,726.77 = 43,212.98 : x
  2. Step 2: Convert to fraction form
    79,511.54/109,726.77 = 43,212.98/x
  3. Step 3: Cross multiply
    79,511.54x = 109,726.77 × 43,212.98
  4. Step 4: Simplify right side
    79,511.54x = 4,741,620,893.19
  5. Step 5: Solve for x
    x = 4,741,620,893.19/79,511.54
  6. Step 6: Final answer
    x = 59,634.38

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1.5x scale

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.