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Finding the Fourth Proportional to 366,921.80, 550,382.70 and 310,934.60

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Solution

The fourth proportional to 366,921.80, 550,382.70 and 310,934.60 is: 466,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,921.80 : 550,382.70 = 310,934.60 : x
  2. Step 2: Convert to fraction form
    366,921.80/550,382.70 = 310,934.60/x
  3. Step 3: Cross multiply
    366,921.80x = 550,382.70 × 310,934.60
  4. Step 4: Simplify right side
    366,921.80x = 171,133,024,671.42
  5. Step 5: Solve for x
    x = 171,133,024,671.42/366,921.80
  6. Step 6: Final answer
    x = 466,401.90

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1.5x scale

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.