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Finding the Fourth Proportional to 994,687.68, 1,492,472.56 and 521,260.50

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Solution

The fourth proportional to 994,687.68, 1,492,472.56 and 521,260.50 is: 782,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,687.68 : 1,492,472.56 = 521,260.50 : x
  2. Step 2: Convert to fraction form
    994,687.68/1,492,472.56 = 521,260.50/x
  3. Step 3: Cross multiply
    994,687.68x = 1,492,472.56 × 521,260.50
  4. Step 4: Simplify right side
    994,687.68x = 777,966,992,861.88
  5. Step 5: Solve for x
    x = 777,966,992,861.88/994,687.68
  6. Step 6: Final answer
    x = 782,121.87

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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.