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Finding the Fourth Proportional to 103,641.44, 143,049.08 and 60,640.96

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Solution

The fourth proportional to 103,641.44, 143,049.08 and 60,640.96 is: 83,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,641.44 : 143,049.08 = 60,640.96 : x
  2. Step 2: Convert to fraction form
    103,641.44/143,049.08 = 60,640.96/x
  3. Step 3: Cross multiply
    103,641.44x = 143,049.08 × 60,640.96
  4. Step 4: Simplify right side
    103,641.44x = 8,674,633,538.32
  5. Step 5: Solve for x
    x = 8,674,633,538.32/103,641.44
  6. Step 6: Final answer
    x = 83,698.50

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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.