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Finding the Fourth Proportional to 78,611.15, 108,477.92 and 44,620.34

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Solution

The fourth proportional to 78,611.15, 108,477.92 and 44,620.34 is: 61,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,611.15 : 108,477.92 = 44,620.34 : x
  2. Step 2: Convert to fraction form
    78,611.15/108,477.92 = 44,620.34/x
  3. Step 3: Cross multiply
    78,611.15x = 108,477.92 × 44,620.34
  4. Step 4: Simplify right side
    78,611.15x = 4,840,320,907.40
  5. Step 5: Solve for x
    x = 4,840,320,907.40/78,611.15
  6. Step 6: Final answer
    x = 61,572.95

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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.