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Finding the Fourth Proportional to 693,859.32, 957,513.42 and 392,046.84

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Solution

The fourth proportional to 693,859.32, 957,513.42 and 392,046.84 is: 541,017.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,859.32 : 957,513.42 = 392,046.84 : x
  2. Step 2: Convert to fraction form
    693,859.32/957,513.42 = 392,046.84/x
  3. Step 3: Cross multiply
    693,859.32x = 957,513.42 × 392,046.84
  4. Step 4: Simplify right side
    693,859.32x = 375,390,110,568.59
  5. Step 5: Solve for x
    x = 375,390,110,568.59/693,859.32
  6. Step 6: Final answer
    x = 541,017.61

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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.