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Finding the Fourth Proportional to 457,917.60, 686,865.60 and 125,493.60

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Solution

The fourth proportional to 457,917.60, 686,865.60 and 125,493.60 is: 188,237.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,917.60 : 686,865.60 = 125,493.60 : x
  2. Step 2: Convert to fraction form
    457,917.60/686,865.60 = 125,493.60/x
  3. Step 3: Cross multiply
    457,917.60x = 686,865.60 × 125,493.60
  4. Step 4: Simplify right side
    457,917.60x = 86,197,236,860.16
  5. Step 5: Solve for x
    x = 86,197,236,860.16/457,917.60
  6. Step 6: Final answer
    x = 188,237.44

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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.