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Finding the Fourth Proportional to 351,316.55, 484,788.60 and 198,391.94

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Solution

The fourth proportional to 351,316.55, 484,788.60 and 198,391.94 is: 273,764.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,316.55 : 484,788.60 = 198,391.94 : x
  2. Step 2: Convert to fraction form
    351,316.55/484,788.60 = 198,391.94/x
  3. Step 3: Cross multiply
    351,316.55x = 484,788.60 × 198,391.94
  4. Step 4: Simplify right side
    351,316.55x = 96,178,152,964.83
  5. Step 5: Solve for x
    x = 96,178,152,964.83/351,316.55
  6. Step 6: Final answer
    x = 273,764.93

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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.