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Finding the Fourth Proportional to 118,793.50, 163,928.14 and 65,069.16

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Solution

The fourth proportional to 118,793.50, 163,928.14 and 65,069.16 is: 89,791.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,793.50 : 163,928.14 = 65,069.16 : x
  2. Step 2: Convert to fraction form
    118,793.50/163,928.14 = 65,069.16/x
  3. Step 3: Cross multiply
    118,793.50x = 163,928.14 × 65,069.16
  4. Step 4: Simplify right side
    118,793.50x = 10,666,665,592.76
  5. Step 5: Solve for x
    x = 10,666,665,592.76/118,793.50
  6. Step 6: Final answer
    x = 89,791.66

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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.