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Finding the Fourth Proportional to 366,959.10, 550,438.65 and 338,090.70

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Solution

The fourth proportional to 366,959.10, 550,438.65 and 338,090.70 is: 507,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,959.10 : 550,438.65 = 338,090.70 : x
  2. Step 2: Convert to fraction form
    366,959.10/550,438.65 = 338,090.70/x
  3. Step 3: Cross multiply
    366,959.10x = 550,438.65 × 338,090.70
  4. Step 4: Simplify right side
    366,959.10x = 186,098,188,485.56
  5. Step 5: Solve for x
    x = 186,098,188,485.56/366,959.10
  6. Step 6: Final answer
    x = 507,136.05

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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.