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Finding the Fourth Proportional to 366,913.10, 550,369.65 and 266,861.90

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Solution

The fourth proportional to 366,913.10, 550,369.65 and 266,861.90 is: 400,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,913.10 : 550,369.65 = 266,861.90 : x
  2. Step 2: Convert to fraction form
    366,913.10/550,369.65 = 266,861.90/x
  3. Step 3: Cross multiply
    366,913.10x = 550,369.65 × 266,861.90
  4. Step 4: Simplify right side
    366,913.10x = 146,872,690,501.34
  5. Step 5: Solve for x
    x = 146,872,690,501.34/366,913.10
  6. Step 6: Final answer
    x = 400,292.85

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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.