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Finding the Fourth Proportional to 859,717, 1,287,803.06 and 503,651.53

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Solution

The fourth proportional to 859,717, 1,287,803.06 and 503,651.53 is: 754,438.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,717 : 1,287,803.06 = 503,651.53 : x
  2. Step 2: Convert to fraction form
    859,717/1,287,803.06 = 503,651.53/x
  3. Step 3: Cross multiply
    859,717x = 1,287,803.06 × 503,651.53
  4. Step 4: Simplify right side
    859,717x = 648,603,981,507.68
  5. Step 5: Solve for x
    x = 648,603,981,507.68/859,717
  6. Step 6: Final answer
    x = 754,438.94

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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.