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Finding the Fourth Proportional to 220,697.96, 330,408.62 and 197,907.80

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Solution

The fourth proportional to 220,697.96, 330,408.62 and 197,907.80 is: 296,289.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,697.96 : 330,408.62 = 197,907.80 : x
  2. Step 2: Convert to fraction form
    220,697.96/330,408.62 = 197,907.80/x
  3. Step 3: Cross multiply
    220,697.96x = 330,408.62 × 197,907.80
  4. Step 4: Simplify right side
    220,697.96x = 65,390,443,085.24
  5. Step 5: Solve for x
    x = 65,390,443,085.24/220,697.96
  6. Step 6: Final answer
    x = 296,289.30

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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.