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Finding the Fourth Proportional to 78,473.32, 108,295.86 and 44,481.40

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Solution

The fourth proportional to 78,473.32, 108,295.86 and 44,481.40 is: 61,385.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,473.32 : 108,295.86 = 44,481.40 : x
  2. Step 2: Convert to fraction form
    78,473.32/108,295.86 = 44,481.40/x
  3. Step 3: Cross multiply
    78,473.32x = 108,295.86 × 44,481.40
  4. Step 4: Simplify right side
    78,473.32x = 4,817,151,467.00
  5. Step 5: Solve for x
    x = 4,817,151,467.00/78,473.32
  6. Step 6: Final answer
    x = 61,385.85

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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.