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Finding the Fourth Proportional to 74,473.85, 102,773.43 and 42,642.74

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Solution

The fourth proportional to 74,473.85, 102,773.43 and 42,642.74 is: 58,846.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,473.85 : 102,773.43 = 42,642.74 : x
  2. Step 2: Convert to fraction form
    74,473.85/102,773.43 = 42,642.74/x
  3. Step 3: Cross multiply
    74,473.85x = 102,773.43 × 42,642.74
  4. Step 4: Simplify right side
    74,473.85x = 4,382,540,911.33
  5. Step 5: Solve for x
    x = 4,382,540,911.33/74,473.85
  6. Step 6: Final answer
    x = 58,846.71

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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.