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Finding the Fourth Proportional to 1,174,435, 1,620,721.92 and 637,891

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Solution

The fourth proportional to 1,174,435, 1,620,721.92 and 637,891 is: 880,290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,435 : 1,620,721.92 = 637,891 : x
  2. Step 2: Convert to fraction form
    1,174,435/1,620,721.92 = 637,891/x
  3. Step 3: Cross multiply
    1,174,435x = 1,620,721.92 × 637,891
  4. Step 4: Simplify right side
    1,174,435x = 1,033,843,926,270.72
  5. Step 5: Solve for x
    x = 1,033,843,926,270.72/1,174,435
  6. Step 6: Final answer
    x = 880,290.46

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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.