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Finding the Fourth Proportional to 408,037.80, 612,153.90 and 197,502.60

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Solution

The fourth proportional to 408,037.80, 612,153.90 and 197,502.60 is: 296,300.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,037.80 : 612,153.90 = 197,502.60 : x
  2. Step 2: Convert to fraction form
    408,037.80/612,153.90 = 197,502.60/x
  3. Step 3: Cross multiply
    408,037.80x = 612,153.90 × 197,502.60
  4. Step 4: Simplify right side
    408,037.80x = 120,901,986,850.14
  5. Step 5: Solve for x
    x = 120,901,986,850.14/408,037.80
  6. Step 6: Final answer
    x = 296,300.95

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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.