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Finding the Fourth Proportional to 89,291.52, 123,201.60 and 53,474.88

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Solution

The fourth proportional to 89,291.52, 123,201.60 and 53,474.88 is: 73,782.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,291.52 : 123,201.60 = 53,474.88 : x
  2. Step 2: Convert to fraction form
    89,291.52/123,201.60 = 53,474.88/x
  3. Step 3: Cross multiply
    89,291.52x = 123,201.60 × 53,474.88
  4. Step 4: Simplify right side
    89,291.52x = 6,588,190,775.81
  5. Step 5: Solve for x
    x = 6,588,190,775.81/89,291.52
  6. Step 6: Final answer
    x = 73,782.94

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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.