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Finding the Fourth Proportional to 693,514.81, 957,044.51 and 387,604.09

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Solution

The fourth proportional to 693,514.81, 957,044.51 and 387,604.09 is: 534,890.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,514.81 : 957,044.51 = 387,604.09 : x
  2. Step 2: Convert to fraction form
    693,514.81/957,044.51 = 387,604.09/x
  3. Step 3: Cross multiply
    693,514.81x = 957,044.51 × 387,604.09
  4. Step 4: Simplify right side
    693,514.81x = 370,954,363,896.74
  5. Step 5: Solve for x
    x = 370,954,363,896.74/693,514.81
  6. Step 6: Final answer
    x = 534,890.33

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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.