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Finding the Fourth Proportional to 74,112.76, 102,256.50 and 43,898.68

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Solution

The fourth proportional to 74,112.76, 102,256.50 and 43,898.68 is: 60,568.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,112.76 : 102,256.50 = 43,898.68 : x
  2. Step 2: Convert to fraction form
    74,112.76/102,256.50 = 43,898.68/x
  3. Step 3: Cross multiply
    74,112.76x = 102,256.50 × 43,898.68
  4. Step 4: Simplify right side
    74,112.76x = 4,488,925,371.42
  5. Step 5: Solve for x
    x = 4,488,925,371.42/74,112.76
  6. Step 6: Final answer
    x = 60,568.86

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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.