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Finding the Fourth Proportional to 1,769,636, 2,654,463.72 and 439,940

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Solution

The fourth proportional to 1,769,636, 2,654,463.72 and 439,940 is: 659,912.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769,636 : 2,654,463.72 = 439,940 : x
  2. Step 2: Convert to fraction form
    1,769,636/2,654,463.72 = 439,940/x
  3. Step 3: Cross multiply
    1,769,636x = 2,654,463.72 × 439,940
  4. Step 4: Simplify right side
    1,769,636x = 1,167,804,768,976.80
  5. Step 5: Solve for x
    x = 1,167,804,768,976.80/1,769,636
  6. Step 6: Final answer
    x = 659,912.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.