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Finding the Fourth Proportional to 3,783,489.81, 5,221,326.99 and 2,064,721.24

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Solution

The fourth proportional to 3,783,489.81, 5,221,326.99 and 2,064,721.24 is: 2,849,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783,489.81 : 5,221,326.99 = 2,064,721.24 : x
  2. Step 2: Convert to fraction form
    3,783,489.81/5,221,326.99 = 2,064,721.24/x
  3. Step 3: Cross multiply
    3,783,489.81x = 5,221,326.99 × 2,064,721.24
  4. Step 4: Simplify right side
    3,783,489.81x = 10,780,584,737,238.27
  5. Step 5: Solve for x
    x = 10,780,584,737,238.27/3,783,489.81
  6. Step 6: Final answer
    x = 2,849,375.91

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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.