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Finding the Fourth Proportional to 9,092.60, 13,631.70 and 4,988.60

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Solution

The fourth proportional to 9,092.60, 13,631.70 and 4,988.60 is: 7,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,092.60 : 13,631.70 = 4,988.60 : x
  2. Step 2: Convert to fraction form
    9,092.60/13,631.70 = 4,988.60/x
  3. Step 3: Cross multiply
    9,092.60x = 13,631.70 × 4,988.60
  4. Step 4: Simplify right side
    9,092.60x = 68,003,098.62
  5. Step 5: Solve for x
    x = 68,003,098.62/9,092.60
  6. Step 6: Final answer
    x = 7,478.95

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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.