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Finding the Fourth Proportional to 61,890.71, 85,409.10 and 33,596.39

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Solution

The fourth proportional to 61,890.71, 85,409.10 and 33,596.39 is: 46,362.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.71 : 85,409.10 = 33,596.39 : x
  2. Step 2: Convert to fraction form
    61,890.71/85,409.10 = 33,596.39/x
  3. Step 3: Cross multiply
    61,890.71x = 85,409.10 × 33,596.39
  4. Step 4: Simplify right side
    61,890.71x = 2,869,437,433.15
  5. Step 5: Solve for x
    x = 2,869,437,433.15/61,890.71
  6. Step 6: Final answer
    x = 46,362.97

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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.