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Finding the Fourth Proportional to 807,696.16, 1,114,644.07 and 445,143.40

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Solution

The fourth proportional to 807,696.16, 1,114,644.07 and 445,143.40 is: 614,310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,696.16 : 1,114,644.07 = 445,143.40 : x
  2. Step 2: Convert to fraction form
    807,696.16/1,114,644.07 = 445,143.40/x
  3. Step 3: Cross multiply
    807,696.16x = 1,114,644.07 × 445,143.40
  4. Step 4: Simplify right side
    807,696.16x = 496,176,448,879.46
  5. Step 5: Solve for x
    x = 496,176,448,879.46/807,696.16
  6. Step 6: Final answer
    x = 614,310.77

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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.