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Finding the Fourth Proportional to 88,720.80, 133,081.20 and 46,584.60

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Solution

The fourth proportional to 88,720.80, 133,081.20 and 46,584.60 is: 69,876.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,720.80 : 133,081.20 = 46,584.60 : x
  2. Step 2: Convert to fraction form
    88,720.80/133,081.20 = 46,584.60/x
  3. Step 3: Cross multiply
    88,720.80x = 133,081.20 × 46,584.60
  4. Step 4: Simplify right side
    88,720.80x = 6,199,534,469.52
  5. Step 5: Solve for x
    x = 6,199,534,469.52/88,720.80
  6. Step 6: Final answer
    x = 69,876.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.