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Finding the Fourth Proportional to 74,689.54, 103,094.31 and 44,479.78

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Solution

The fourth proportional to 74,689.54, 103,094.31 and 44,479.78 is: 61,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,689.54 : 103,094.31 = 44,479.78 : x
  2. Step 2: Convert to fraction form
    74,689.54/103,094.31 = 44,479.78/x
  3. Step 3: Cross multiply
    74,689.54x = 103,094.31 × 44,479.78
  4. Step 4: Simplify right side
    74,689.54x = 4,585,612,228.05
  5. Step 5: Solve for x
    x = 4,585,612,228.05/74,689.54
  6. Step 6: Final answer
    x = 61,395.64

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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.