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Finding the Fourth Proportional to 366,923.10, 550,384.65 and 328,431.90

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Solution

The fourth proportional to 366,923.10, 550,384.65 and 328,431.90 is: 492,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,923.10 : 550,384.65 = 328,431.90 : x
  2. Step 2: Convert to fraction form
    366,923.10/550,384.65 = 328,431.90/x
  3. Step 3: Cross multiply
    366,923.10x = 550,384.65 × 328,431.90
  4. Step 4: Simplify right side
    366,923.10x = 180,763,876,330.34
  5. Step 5: Solve for x
    x = 180,763,876,330.34/366,923.10
  6. Step 6: Final answer
    x = 492,647.85

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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.