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Finding the Fourth Proportional to 74,310.10, 111,465.15 and 48,940.90

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Solution

The fourth proportional to 74,310.10, 111,465.15 and 48,940.90 is: 73,411.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,310.10 : 111,465.15 = 48,940.90 : x
  2. Step 2: Convert to fraction form
    74,310.10/111,465.15 = 48,940.90/x
  3. Step 3: Cross multiply
    74,310.10x = 111,465.15 × 48,940.90
  4. Step 4: Simplify right side
    74,310.10x = 5,455,204,759.64
  5. Step 5: Solve for x
    x = 5,455,204,759.64/74,310.10
  6. Step 6: Final answer
    x = 73,411.35

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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.