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Finding the Fourth Proportional to 411,459.20, 617,450.88 and 274,990.40

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Solution

The fourth proportional to 411,459.20, 617,450.88 and 274,990.40 is: 412,660.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,459.20 : 617,450.88 = 274,990.40 : x
  2. Step 2: Convert to fraction form
    411,459.20/617,450.88 = 274,990.40/x
  3. Step 3: Cross multiply
    411,459.20x = 617,450.88 × 274,990.40
  4. Step 4: Simplify right side
    411,459.20x = 169,793,064,471.55
  5. Step 5: Solve for x
    x = 169,793,064,471.55/411,459.20
  6. Step 6: Final answer
    x = 412,660.76

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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.