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Finding the Fourth Proportional to 61,890.80, 85,409.40 and 33,596.48

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Solution

The fourth proportional to 61,890.80, 85,409.40 and 33,596.48 is: 46,363.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.80 : 85,409.40 = 33,596.48 : x
  2. Step 2: Convert to fraction form
    61,890.80/85,409.40 = 33,596.48/x
  3. Step 3: Cross multiply
    61,890.80x = 85,409.40 × 33,596.48
  4. Step 4: Simplify right side
    61,890.80x = 2,869,455,198.91
  5. Step 5: Solve for x
    x = 2,869,455,198.91/61,890.80
  6. Step 6: Final answer
    x = 46,363.19

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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.