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Finding the Fourth Proportional to 58,991.39, 81,405.82 and 36,059.60

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Solution

The fourth proportional to 58,991.39, 81,405.82 and 36,059.60 is: 49,760.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,991.39 : 81,405.82 = 36,059.60 : x
  2. Step 2: Convert to fraction form
    58,991.39/81,405.82 = 36,059.60/x
  3. Step 3: Cross multiply
    58,991.39x = 81,405.82 × 36,059.60
  4. Step 4: Simplify right side
    58,991.39x = 2,935,461,126.57
  5. Step 5: Solve for x
    x = 2,935,461,126.57/58,991.39
  6. Step 6: Final answer
    x = 49,760.84

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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.