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Finding the Fourth Proportional to 74,873.48, 103,324.61 and 40,881.86

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Solution

The fourth proportional to 74,873.48, 103,324.61 and 40,881.86 is: 56,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,873.48 : 103,324.61 = 40,881.86 : x
  2. Step 2: Convert to fraction form
    74,873.48/103,324.61 = 40,881.86/x
  3. Step 3: Cross multiply
    74,873.48x = 103,324.61 × 40,881.86
  4. Step 4: Simplify right side
    74,873.48x = 4,224,102,601.09
  5. Step 5: Solve for x
    x = 4,224,102,601.09/74,873.48
  6. Step 6: Final answer
    x = 56,416.54

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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.