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Finding the Fourth Proportional to 61,842.44, 85,422.66 and 45,742.50

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Solution

The fourth proportional to 61,842.44, 85,422.66 and 45,742.50 is: 63,183.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,842.44 : 85,422.66 = 45,742.50 : x
  2. Step 2: Convert to fraction form
    61,842.44/85,422.66 = 45,742.50/x
  3. Step 3: Cross multiply
    61,842.44x = 85,422.66 × 45,742.50
  4. Step 4: Simplify right side
    61,842.44x = 3,907,446,025.05
  5. Step 5: Solve for x
    x = 3,907,446,025.05/61,842.44
  6. Step 6: Final answer
    x = 63,183.89

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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.