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Finding the Fourth Proportional to 639,282.72, 958,758.03 and 189,897.96

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Solution

The fourth proportional to 639,282.72, 958,758.03 and 189,897.96 is: 284,797.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,282.72 : 958,758.03 = 189,897.96 : x
  2. Step 2: Convert to fraction form
    639,282.72/958,758.03 = 189,897.96/x
  3. Step 3: Cross multiply
    639,282.72x = 958,758.03 × 189,897.96
  4. Step 4: Simplify right side
    639,282.72x = 182,066,194,030.62
  5. Step 5: Solve for x
    x = 182,066,194,030.62/639,282.72
  6. Step 6: Final answer
    x = 284,797.62

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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.