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Finding the Fourth Proportional to 339,294.20, 508,941.30 and 313,633.40

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Solution

The fourth proportional to 339,294.20, 508,941.30 and 313,633.40 is: 470,450.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,294.20 : 508,941.30 = 313,633.40 : x
  2. Step 2: Convert to fraction form
    339,294.20/508,941.30 = 313,633.40/x
  3. Step 3: Cross multiply
    339,294.20x = 508,941.30 × 313,633.40
  4. Step 4: Simplify right side
    339,294.20x = 159,620,990,319.42
  5. Step 5: Solve for x
    x = 159,620,990,319.42/339,294.20
  6. Step 6: Final answer
    x = 470,450.10

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Similar ratio
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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.