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Finding the Fourth Proportional to 147,212.72, 220,884.72 and 53,696.60

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Solution

The fourth proportional to 147,212.72, 220,884.72 and 53,696.60 is: 80,568.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,212.72 : 220,884.72 = 53,696.60 : x
  2. Step 2: Convert to fraction form
    147,212.72/220,884.72 = 53,696.60/x
  3. Step 3: Cross multiply
    147,212.72x = 220,884.72 × 53,696.60
  4. Step 4: Simplify right side
    147,212.72x = 11,860,758,455.95
  5. Step 5: Solve for x
    x = 11,860,758,455.95/147,212.72
  6. Step 6: Final answer
    x = 80,568.84

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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.