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Finding the Fourth Proportional to 347,600.80, 521,012.40 and 197,912.80

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Solution

The fourth proportional to 347,600.80, 521,012.40 and 197,912.80 is: 296,647.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,600.80 : 521,012.40 = 197,912.80 : x
  2. Step 2: Convert to fraction form
    347,600.80/521,012.40 = 197,912.80/x
  3. Step 3: Cross multiply
    347,600.80x = 521,012.40 × 197,912.80
  4. Step 4: Simplify right side
    347,600.80x = 103,115,022,918.72
  5. Step 5: Solve for x
    x = 103,115,022,918.72/347,600.80
  6. Step 6: Final answer
    x = 296,647.83

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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.