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Finding the Fourth Proportional to 53,991.70, 74,489.40 and 36,098.02

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Solution

The fourth proportional to 53,991.70, 74,489.40 and 36,098.02 is: 49,802.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,991.70 : 74,489.40 = 36,098.02 : x
  2. Step 2: Convert to fraction form
    53,991.70/74,489.40 = 36,098.02/x
  3. Step 3: Cross multiply
    53,991.70x = 74,489.40 × 36,098.02
  4. Step 4: Simplify right side
    53,991.70x = 2,688,919,850.99
  5. Step 5: Solve for x
    x = 2,688,919,850.99/53,991.70
  6. Step 6: Final answer
    x = 49,802.47

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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.