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Finding the Fourth Proportional to 1,405,241, 1,939,495.30 and 801,629

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Solution

The fourth proportional to 1,405,241, 1,939,495.30 and 801,629 is: 1,106,397.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,241 : 1,939,495.30 = 801,629 : x
  2. Step 2: Convert to fraction form
    1,405,241/1,939,495.30 = 801,629/x
  3. Step 3: Cross multiply
    1,405,241x = 1,939,495.30 × 801,629
  4. Step 4: Simplify right side
    1,405,241x = 1,554,755,677,843.70
  5. Step 5: Solve for x
    x = 1,554,755,677,843.70/1,405,241
  6. Step 6: Final answer
    x = 1,106,397.89

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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.