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Finding the Fourth Proportional to 383,005.86, 527,406.84 and 374,508.96

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Solution

The fourth proportional to 383,005.86, 527,406.84 and 374,508.96 is: 515,706.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,005.86 : 527,406.84 = 374,508.96 : x
  2. Step 2: Convert to fraction form
    383,005.86/527,406.84 = 374,508.96/x
  3. Step 3: Cross multiply
    383,005.86x = 527,406.84 × 374,508.96
  4. Step 4: Simplify right side
    383,005.86x = 197,518,587,145.29
  5. Step 5: Solve for x
    x = 197,518,587,145.29/383,005.86
  6. Step 6: Final answer
    x = 515,706.44

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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.