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Finding the Fourth Proportional to 203,870.40, 305,805.60 and 185,499.60

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Solution

The fourth proportional to 203,870.40, 305,805.60 and 185,499.60 is: 278,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,870.40 : 305,805.60 = 185,499.60 : x
  2. Step 2: Convert to fraction form
    203,870.40/305,805.60 = 185,499.60/x
  3. Step 3: Cross multiply
    203,870.40x = 305,805.60 × 185,499.60
  4. Step 4: Simplify right side
    203,870.40x = 56,726,816,477.76
  5. Step 5: Solve for x
    x = 56,726,816,477.76/203,870.40
  6. Step 6: Final answer
    x = 278,249.40

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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.