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Finding the Fourth Proportional to 381,590.46, 572,390.87 and 141,611.63

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Solution

The fourth proportional to 381,590.46, 572,390.87 and 141,611.63 is: 212,419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,590.46 : 572,390.87 = 141,611.63 : x
  2. Step 2: Convert to fraction form
    381,590.46/572,390.87 = 141,611.63/x
  3. Step 3: Cross multiply
    381,590.46x = 572,390.87 × 141,611.63
  4. Step 4: Simplify right side
    381,590.46x = 81,057,204,097.82
  5. Step 5: Solve for x
    x = 81,057,204,097.82/381,590.46
  6. Step 6: Final answer
    x = 212,419.37

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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.