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Finding the Fourth Proportional to 366,033.60, 547,981.20 and 261,057.60

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Solution

The fourth proportional to 366,033.60, 547,981.20 and 261,057.60 is: 390,823.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,033.60 : 547,981.20 = 261,057.60 : x
  2. Step 2: Convert to fraction form
    366,033.60/547,981.20 = 261,057.60/x
  3. Step 3: Cross multiply
    366,033.60x = 547,981.20 × 261,057.60
  4. Step 4: Simplify right side
    366,033.60x = 143,054,656,917.12
  5. Step 5: Solve for x
    x = 143,054,656,917.12/366,033.60
  6. Step 6: Final answer
    x = 390,823.84

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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.