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Finding the Fourth Proportional to 407,273.40, 611,201.70 and 170,785.80

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Solution

The fourth proportional to 407,273.40, 611,201.70 and 170,785.80 is: 256,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,273.40 : 611,201.70 = 170,785.80 : x
  2. Step 2: Convert to fraction form
    407,273.40/611,201.70 = 170,785.80/x
  3. Step 3: Cross multiply
    407,273.40x = 611,201.70 × 170,785.80
  4. Step 4: Simplify right side
    407,273.40x = 104,384,571,295.86
  5. Step 5: Solve for x
    x = 104,384,571,295.86/407,273.40
  6. Step 6: Final answer
    x = 256,300.98

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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.