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Finding the Fourth Proportional to 381,611.10, 572,416.65 and 192,654.30

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Solution

The fourth proportional to 381,611.10, 572,416.65 and 192,654.30 is: 288,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,611.10 : 572,416.65 = 192,654.30 : x
  2. Step 2: Convert to fraction form
    381,611.10/572,416.65 = 192,654.30/x
  3. Step 3: Cross multiply
    381,611.10x = 572,416.65 × 192,654.30
  4. Step 4: Simplify right side
    381,611.10x = 110,278,529,014.10
  5. Step 5: Solve for x
    x = 110,278,529,014.10/381,611.10
  6. Step 6: Final answer
    x = 288,981.45

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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.