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Finding the Fourth Proportional to 367,632.40, 551,448.60 and 209,876.80

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Solution

The fourth proportional to 367,632.40, 551,448.60 and 209,876.80 is: 314,815.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,632.40 : 551,448.60 = 209,876.80 : x
  2. Step 2: Convert to fraction form
    367,632.40/551,448.60 = 209,876.80/x
  3. Step 3: Cross multiply
    367,632.40x = 551,448.60 × 209,876.80
  4. Step 4: Simplify right side
    367,632.40x = 115,736,267,532.48
  5. Step 5: Solve for x
    x = 115,736,267,532.48/367,632.40
  6. Step 6: Final answer
    x = 314,815.20

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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.