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Finding the Fourth Proportional to 118,469.76, 163,410.88 and 75,960.96

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Solution

The fourth proportional to 118,469.76, 163,410.88 and 75,960.96 is: 104,776.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,469.76 : 163,410.88 = 75,960.96 : x
  2. Step 2: Convert to fraction form
    118,469.76/163,410.88 = 75,960.96/x
  3. Step 3: Cross multiply
    118,469.76x = 163,410.88 × 75,960.96
  4. Step 4: Simplify right side
    118,469.76x = 12,412,847,319.24
  5. Step 5: Solve for x
    x = 12,412,847,319.24/118,469.76
  6. Step 6: Final answer
    x = 104,776.50

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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.