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Finding the Fourth Proportional to 484,109.80, 726,164.70 and 372,135.40

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Solution

The fourth proportional to 484,109.80, 726,164.70 and 372,135.40 is: 558,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,109.80 : 726,164.70 = 372,135.40 : x
  2. Step 2: Convert to fraction form
    484,109.80/726,164.70 = 372,135.40/x
  3. Step 3: Cross multiply
    484,109.80x = 726,164.70 × 372,135.40
  4. Step 4: Simplify right side
    484,109.80x = 270,231,591,100.38
  5. Step 5: Solve for x
    x = 270,231,591,100.38/484,109.80
  6. Step 6: Final answer
    x = 558,203.10

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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.