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Finding the Fourth Proportional to 366,921.10, 550,381.65 and 338,052.70

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Solution

The fourth proportional to 366,921.10, 550,381.65 and 338,052.70 is: 507,079.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,921.10 : 550,381.65 = 338,052.70 : x
  2. Step 2: Convert to fraction form
    366,921.10/550,381.65 = 338,052.70/x
  3. Step 3: Cross multiply
    366,921.10x = 550,381.65 × 338,052.70
  4. Step 4: Simplify right side
    366,921.10x = 186,058,002,812.96
  5. Step 5: Solve for x
    x = 186,058,002,812.96/366,921.10
  6. Step 6: Final answer
    x = 507,079.05

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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.