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Finding the Fourth Proportional to 1,405,231, 1,939,481.49 and 801,619

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Solution

The fourth proportional to 1,405,231, 1,939,481.49 and 801,619 is: 1,106,384.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,231 : 1,939,481.49 = 801,619 : x
  2. Step 2: Convert to fraction form
    1,405,231/1,939,481.49 = 801,619/x
  3. Step 3: Cross multiply
    1,405,231x = 1,939,481.49 × 801,619
  4. Step 4: Simplify right side
    1,405,231x = 1,554,725,212,532.31
  5. Step 5: Solve for x
    x = 1,554,725,212,532.31/1,405,231
  6. Step 6: Final answer
    x = 1,106,384.08

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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.