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Finding the Fourth Proportional to 605,879.20, 908,818.80 and 206,970.40

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Solution

The fourth proportional to 605,879.20, 908,818.80 and 206,970.40 is: 310,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,879.20 : 908,818.80 = 206,970.40 : x
  2. Step 2: Convert to fraction form
    605,879.20/908,818.80 = 206,970.40/x
  3. Step 3: Cross multiply
    605,879.20x = 908,818.80 × 206,970.40
  4. Step 4: Simplify right side
    605,879.20x = 188,098,590,563.52
  5. Step 5: Solve for x
    x = 188,098,590,563.52/605,879.20
  6. Step 6: Final answer
    x = 310,455.60

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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.