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Finding the Fourth Proportional to 711,953.22, 982,491.91 and 385,266

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Solution

The fourth proportional to 711,953.22, 982,491.91 and 385,266 is: 531,665.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,953.22 : 982,491.91 = 385,266 : x
  2. Step 2: Convert to fraction form
    711,953.22/982,491.91 = 385,266/x
  3. Step 3: Cross multiply
    711,953.22x = 982,491.91 × 385,266
  4. Step 4: Simplify right side
    711,953.22x = 378,520,727,234.90
  5. Step 5: Solve for x
    x = 378,520,727,234.90/711,953.22
  6. Step 6: Final answer
    x = 531,665.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.