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Finding the Fourth Proportional to 1,769,286, 2,653,929 and 439,590

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Solution

The fourth proportional to 1,769,286, 2,653,929 and 439,590 is: 659,385

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769,286 : 2,653,929 = 439,590 : x
  2. Step 2: Convert to fraction form
    1,769,286/2,653,929 = 439,590/x
  3. Step 3: Cross multiply
    1,769,286x = 2,653,929 × 439,590
  4. Step 4: Simplify right side
    1,769,286x = 1,166,640,649,110
  5. Step 5: Solve for x
    x = 1,166,640,649,110/1,769,286
  6. Step 6: Final answer
    x = 659,385

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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.