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Finding the Fourth Proportional to 393,717.58, 543,325.53 and 223,951.30

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Solution

The fourth proportional to 393,717.58, 543,325.53 and 223,951.30 is: 309,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,717.58 : 543,325.53 = 223,951.30 : x
  2. Step 2: Convert to fraction form
    393,717.58/543,325.53 = 223,951.30/x
  3. Step 3: Cross multiply
    393,717.58x = 543,325.53 × 223,951.30
  4. Step 4: Simplify right side
    393,717.58x = 121,678,458,766.69
  5. Step 5: Solve for x
    x = 121,678,458,766.69/393,717.58
  6. Step 6: Final answer
    x = 309,050.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.