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Finding the Fourth Proportional to 474,891.48, 712,374.21 and 137,937.60

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Solution

The fourth proportional to 474,891.48, 712,374.21 and 137,937.60 is: 206,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,891.48 : 712,374.21 = 137,937.60 : x
  2. Step 2: Convert to fraction form
    474,891.48/712,374.21 = 137,937.60/x
  3. Step 3: Cross multiply
    474,891.48x = 712,374.21 × 137,937.60
  4. Step 4: Simplify right side
    474,891.48x = 98,263,188,829.30
  5. Step 5: Solve for x
    x = 98,263,188,829.30/474,891.48
  6. Step 6: Final answer
    x = 206,917.14

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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.