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Finding the Fourth Proportional to 342,459.20, 512,997.60 and 194,542.40

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Solution

The fourth proportional to 342,459.20, 512,997.60 and 194,542.40 is: 291,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,459.20 : 512,997.60 = 194,542.40 : x
  2. Step 2: Convert to fraction form
    342,459.20/512,997.60 = 194,542.40/x
  3. Step 3: Cross multiply
    342,459.20x = 512,997.60 × 194,542.40
  4. Step 4: Simplify right side
    342,459.20x = 99,799,784,298.24
  5. Step 5: Solve for x
    x = 99,799,784,298.24/342,459.20
  6. Step 6: Final answer
    x = 291,420.95

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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.