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Finding the Fourth Proportional to 74,447.51, 102,753.77 and 45,791.80

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Solution

The fourth proportional to 74,447.51, 102,753.77 and 45,791.80 is: 63,202.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,447.51 : 102,753.77 = 45,791.80 : x
  2. Step 2: Convert to fraction form
    74,447.51/102,753.77 = 45,791.80/x
  3. Step 3: Cross multiply
    74,447.51x = 102,753.77 × 45,791.80
  4. Step 4: Simplify right side
    74,447.51x = 4,705,280,085.09
  5. Step 5: Solve for x
    x = 4,705,280,085.09/74,447.51
  6. Step 6: Final answer
    x = 63,202.65

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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.