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Finding the Fourth Proportional to 74,940.68, 112,396.60 and 34,948.64

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Solution

The fourth proportional to 74,940.68, 112,396.60 and 34,948.64 is: 52,416.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,940.68 : 112,396.60 = 34,948.64 : x
  2. Step 2: Convert to fraction form
    74,940.68/112,396.60 = 34,948.64/x
  3. Step 3: Cross multiply
    74,940.68x = 112,396.60 × 34,948.64
  4. Step 4: Simplify right side
    74,940.68x = 3,928,108,310.62
  5. Step 5: Solve for x
    x = 3,928,108,310.62/74,940.68
  6. Step 6: Final answer
    x = 52,416.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.