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Finding the Fourth Proportional to 228,940.80, 343,405.80 and 62,728.80

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Solution

The fourth proportional to 228,940.80, 343,405.80 and 62,728.80 is: 94,091.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,940.80 : 343,405.80 = 62,728.80 : x
  2. Step 2: Convert to fraction form
    228,940.80/343,405.80 = 62,728.80/x
  3. Step 3: Cross multiply
    228,940.80x = 343,405.80 × 62,728.80
  4. Step 4: Simplify right side
    228,940.80x = 21,541,433,747.04
  5. Step 5: Solve for x
    x = 21,541,433,747.04/228,940.80
  6. Step 6: Final answer
    x = 94,091.72

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1.5x scale

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.