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Finding the Fourth Proportional to 116,871.20, 174,961.20 and 104,429.60

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Solution

The fourth proportional to 116,871.20, 174,961.20 and 104,429.60 is: 156,335.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,871.20 : 174,961.20 = 104,429.60 : x
  2. Step 2: Convert to fraction form
    116,871.20/174,961.20 = 104,429.60/x
  3. Step 3: Cross multiply
    116,871.20x = 174,961.20 × 104,429.60
  4. Step 4: Simplify right side
    116,871.20x = 18,271,128,131.52
  5. Step 5: Solve for x
    x = 18,271,128,131.52/116,871.20
  6. Step 6: Final answer
    x = 156,335.59

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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.