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Finding the Fourth Proportional to 111,643.20, 167,464.80 and 37,771.20

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Solution

The fourth proportional to 111,643.20, 167,464.80 and 37,771.20 is: 56,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,643.20 : 167,464.80 = 37,771.20 : x
  2. Step 2: Convert to fraction form
    111,643.20/167,464.80 = 37,771.20/x
  3. Step 3: Cross multiply
    111,643.20x = 167,464.80 × 37,771.20
  4. Step 4: Simplify right side
    111,643.20x = 6,325,346,453.76
  5. Step 5: Solve for x
    x = 6,325,346,453.76/111,643.20
  6. Step 6: Final answer
    x = 56,656.80

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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.