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Finding the Fourth Proportional to 551,790.85, 827,701.90 and 152,431.69

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Solution

The fourth proportional to 551,790.85, 827,701.90 and 152,431.69 is: 228,651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,790.85 : 827,701.90 = 152,431.69 : x
  2. Step 2: Convert to fraction form
    551,790.85/827,701.90 = 152,431.69/x
  3. Step 3: Cross multiply
    551,790.85x = 827,701.90 × 152,431.69
  4. Step 4: Simplify right side
    551,790.85x = 126,167,999,433.21
  5. Step 5: Solve for x
    x = 126,167,999,433.21/551,790.85
  6. Step 6: Final answer
    x = 228,651.85

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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.