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Finding the Fourth Proportional to 416,140.80, 624,211.20 and 367,929.60

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Solution

The fourth proportional to 416,140.80, 624,211.20 and 367,929.60 is: 551,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,140.80 : 624,211.20 = 367,929.60 : x
  2. Step 2: Convert to fraction form
    416,140.80/624,211.20 = 367,929.60/x
  3. Step 3: Cross multiply
    416,140.80x = 624,211.20 × 367,929.60
  4. Step 4: Simplify right side
    416,140.80x = 229,665,777,131.52
  5. Step 5: Solve for x
    x = 229,665,777,131.52/416,140.80
  6. Step 6: Final answer
    x = 551,894.40

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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.