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Finding the Fourth Proportional to 61,072.60, 91,608.90 and 61,072.60

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Solution

The fourth proportional to 61,072.60, 91,608.90 and 61,072.60 is: 91,608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,072.60 : 91,608.90 = 61,072.60 : x
  2. Step 2: Convert to fraction form
    61,072.60/91,608.90 = 61,072.60/x
  3. Step 3: Cross multiply
    61,072.60x = 91,608.90 × 61,072.60
  4. Step 4: Simplify right side
    61,072.60x = 5,594,793,706.14
  5. Step 5: Solve for x
    x = 5,594,793,706.14/61,072.60
  6. Step 6: Final answer
    x = 91,608.90

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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.