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Finding the Fourth Proportional to 1,012,963.02, 1,396,521 and 649,756.38

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Solution

The fourth proportional to 1,012,963.02, 1,396,521 and 649,756.38 is: 895,786.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,963.02 : 1,396,521 = 649,756.38 : x
  2. Step 2: Convert to fraction form
    1,012,963.02/1,396,521 = 649,756.38/x
  3. Step 3: Cross multiply
    1,012,963.02x = 1,396,521 × 649,756.38
  4. Step 4: Simplify right side
    1,012,963.02x = 907,398,429,553.98
  5. Step 5: Solve for x
    x = 907,398,429,553.98/1,012,963.02
  6. Step 6: Final answer
    x = 895,786.33

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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.