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Finding the Fourth Proportional to 74,969.40, 103,440.72 and 44,764.50

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Solution

The fourth proportional to 74,969.40, 103,440.72 and 44,764.50 is: 61,764.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,969.40 : 103,440.72 = 44,764.50 : x
  2. Step 2: Convert to fraction form
    74,969.40/103,440.72 = 44,764.50/x
  3. Step 3: Cross multiply
    74,969.40x = 103,440.72 × 44,764.50
  4. Step 4: Simplify right side
    74,969.40x = 4,630,472,110.44
  5. Step 5: Solve for x
    x = 4,630,472,110.44/74,969.40
  6. Step 6: Final answer
    x = 61,764.83

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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.