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Finding the Fourth Proportional to 74,643.66, 103,003.57 and 41,109.66

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Solution

The fourth proportional to 74,643.66, 103,003.57 and 41,109.66 is: 56,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,643.66 : 103,003.57 = 41,109.66 : x
  2. Step 2: Convert to fraction form
    74,643.66/103,003.57 = 41,109.66/x
  3. Step 3: Cross multiply
    74,643.66x = 103,003.57 × 41,109.66
  4. Step 4: Simplify right side
    74,643.66x = 4,234,441,741.49
  5. Step 5: Solve for x
    x = 4,234,441,741.49/74,643.66
  6. Step 6: Final answer
    x = 56,728.75

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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.