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Finding the Fourth Proportional to 483,311.81, 725,266.91 and 281,003.07

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Solution

The fourth proportional to 483,311.81, 725,266.91 and 281,003.07 is: 421,678.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,311.81 : 725,266.91 = 281,003.07 : x
  2. Step 2: Convert to fraction form
    483,311.81/725,266.91 = 281,003.07/x
  3. Step 3: Cross multiply
    483,311.81x = 725,266.91 × 281,003.07
  4. Step 4: Simplify right side
    483,311.81x = 203,802,231,701.67
  5. Step 5: Solve for x
    x = 203,802,231,701.67/483,311.81
  6. Step 6: Final answer
    x = 421,678.57

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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.