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Finding the Fourth Proportional to 74,310.60, 111,465.90 and 48,941.40

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Solution

The fourth proportional to 74,310.60, 111,465.90 and 48,941.40 is: 73,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,310.60 : 111,465.90 = 48,941.40 : x
  2. Step 2: Convert to fraction form
    74,310.60/111,465.90 = 48,941.40/x
  3. Step 3: Cross multiply
    74,310.60x = 111,465.90 × 48,941.40
  4. Step 4: Simplify right side
    74,310.60x = 5,455,297,198.26
  5. Step 5: Solve for x
    x = 5,455,297,198.26/74,310.60
  6. Step 6: Final answer
    x = 73,412.10

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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.