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Finding the Fourth Proportional to 689,249.66, 951,109.35 and 383,326.61

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Solution

The fourth proportional to 689,249.66, 951,109.35 and 383,326.61 is: 528,960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,249.66 : 951,109.35 = 383,326.61 : x
  2. Step 2: Convert to fraction form
    689,249.66/951,109.35 = 383,326.61/x
  3. Step 3: Cross multiply
    689,249.66x = 951,109.35 × 383,326.61
  4. Step 4: Simplify right side
    689,249.66x = 364,585,522,874.80
  5. Step 5: Solve for x
    x = 364,585,522,874.80/689,249.66
  6. Step 6: Final answer
    x = 528,960.03

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1.5x scale

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.