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Finding the Fourth Proportional to 61,914.61, 85,441.41 and 33,620.50

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Solution

The fourth proportional to 61,914.61, 85,441.41 and 33,620.50 is: 46,395.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,914.61 : 85,441.41 = 33,620.50 : x
  2. Step 2: Convert to fraction form
    61,914.61/85,441.41 = 33,620.50/x
  3. Step 3: Cross multiply
    61,914.61x = 85,441.41 × 33,620.50
  4. Step 4: Simplify right side
    61,914.61x = 2,872,582,924.91
  5. Step 5: Solve for x
    x = 2,872,582,924.91/61,914.61
  6. Step 6: Final answer
    x = 46,395.88

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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.