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Finding the Fourth Proportional to 61,573.36, 84,930.74 and 42,453.94

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Solution

The fourth proportional to 61,573.36, 84,930.74 and 42,453.94 is: 58,558.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,573.36 : 84,930.74 = 42,453.94 : x
  2. Step 2: Convert to fraction form
    61,573.36/84,930.74 = 42,453.94/x
  3. Step 3: Cross multiply
    61,573.36x = 84,930.74 × 42,453.94
  4. Step 4: Simplify right side
    61,573.36x = 3,605,644,540.12
  5. Step 5: Solve for x
    x = 3,605,644,540.12/61,573.36
  6. Step 6: Final answer
    x = 58,558.52

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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.