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Finding the Fourth Proportional to 1,904,648.84, 2,628,491.28 and 1,045,239.92

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Solution

The fourth proportional to 1,904,648.84, 2,628,491.28 and 1,045,239.92 is: 1,442,472.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,904,648.84 : 2,628,491.28 = 1,045,239.92 : x
  2. Step 2: Convert to fraction form
    1,904,648.84/2,628,491.28 = 1,045,239.92/x
  3. Step 3: Cross multiply
    1,904,648.84x = 2,628,491.28 × 1,045,239.92
  4. Step 4: Simplify right side
    1,904,648.84x = 2,747,404,015,227.90
  5. Step 5: Solve for x
    x = 2,747,404,015,227.90/1,904,648.84
  6. Step 6: Final answer
    x = 1,442,472.73

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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.