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Finding the Fourth Proportional to 374,311.20, 561,491.10 and 197,164.20

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Solution

The fourth proportional to 374,311.20, 561,491.10 and 197,164.20 is: 295,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,311.20 : 561,491.10 = 197,164.20 : x
  2. Step 2: Convert to fraction form
    374,311.20/561,491.10 = 197,164.20/x
  3. Step 3: Cross multiply
    374,311.20x = 561,491.10 × 197,164.20
  4. Step 4: Simplify right side
    374,311.20x = 110,705,943,538.62
  5. Step 5: Solve for x
    x = 110,705,943,538.62/374,311.20
  6. Step 6: Final answer
    x = 295,759.10

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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.