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Finding the Fourth Proportional to 111,977.52, 167,969.48 and 28,871.52

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Solution

The fourth proportional to 111,977.52, 167,969.48 and 28,871.52 is: 43,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,977.52 : 167,969.48 = 28,871.52 : x
  2. Step 2: Convert to fraction form
    111,977.52/167,969.48 = 28,871.52/x
  3. Step 3: Cross multiply
    111,977.52x = 167,969.48 × 28,871.52
  4. Step 4: Simplify right side
    111,977.52x = 4,849,534,201.21
  5. Step 5: Solve for x
    x = 4,849,534,201.21/111,977.52
  6. Step 6: Final answer
    x = 43,308.11

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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.