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Finding the Fourth Proportional to 74,992.80, 112,359.60 and 35,464.80

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Solution

The fourth proportional to 74,992.80, 112,359.60 and 35,464.80 is: 53,135.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,992.80 : 112,359.60 = 35,464.80 : x
  2. Step 2: Convert to fraction form
    74,992.80/112,359.60 = 35,464.80/x
  3. Step 3: Cross multiply
    74,992.80x = 112,359.60 × 35,464.80
  4. Step 4: Simplify right side
    74,992.80x = 3,984,810,742.08
  5. Step 5: Solve for x
    x = 3,984,810,742.08/74,992.80
  6. Step 6: Final answer
    x = 53,135.91

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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.