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Finding the Fourth Proportional to 58,391.17, 80,579.81 and 31,533.68

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Solution

The fourth proportional to 58,391.17, 80,579.81 and 31,533.68 is: 43,516.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,391.17 : 80,579.81 = 31,533.68 : x
  2. Step 2: Convert to fraction form
    58,391.17/80,579.81 = 31,533.68/x
  3. Step 3: Cross multiply
    58,391.17x = 80,579.81 × 31,533.68
  4. Step 4: Simplify right side
    58,391.17x = 2,540,977,382.43
  5. Step 5: Solve for x
    x = 2,540,977,382.43/58,391.17
  6. Step 6: Final answer
    x = 43,516.47

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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.