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Finding the Fourth Proportional to 61,890.42, 85,410.13 and 37,692.52

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Solution

The fourth proportional to 61,890.42, 85,410.13 and 37,692.52 is: 52,016.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.42 : 85,410.13 = 37,692.52 : x
  2. Step 2: Convert to fraction form
    61,890.42/85,410.13 = 37,692.52/x
  3. Step 3: Cross multiply
    61,890.42x = 85,410.13 × 37,692.52
  4. Step 4: Simplify right side
    61,890.42x = 3,219,322,866.82
  5. Step 5: Solve for x
    x = 3,219,322,866.82/61,890.42
  6. Step 6: Final answer
    x = 52,016.50

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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.