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Finding the Fourth Proportional to 61,932.72, 85,467.18 and 33,639

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Solution

The fourth proportional to 61,932.72, 85,467.18 and 33,639 is: 46,421.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,932.72 : 85,467.18 = 33,639 : x
  2. Step 2: Convert to fraction form
    61,932.72/85,467.18 = 33,639/x
  3. Step 3: Cross multiply
    61,932.72x = 85,467.18 × 33,639
  4. Step 4: Simplify right side
    61,932.72x = 2,875,030,468.02
  5. Step 5: Solve for x
    x = 2,875,030,468.02/61,932.72
  6. Step 6: Final answer
    x = 46,421.83

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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.