Home / 20,505,873.20-30,758,809.80-20,187,008.60

Finding the Fourth Proportional to 20,505,873.20, 30,758,809.80 and 20,187,008.60

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Solution

The fourth proportional to 20,505,873.20, 30,758,809.80 and 20,187,008.60 is: 30,280,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505,873.20 : 30,758,809.80 = 20,187,008.60 : x
  2. Step 2: Convert to fraction form
    20,505,873.20/30,758,809.80 = 20,187,008.60/x
  3. Step 3: Cross multiply
    20,505,873.20x = 30,758,809.80 × 20,187,008.60
  4. Step 4: Simplify right side
    20,505,873.20x = 620,928,357,958,364.38
  5. Step 5: Solve for x
    x = 620,928,357,958,364.38/20,505,873.20
  6. Step 6: Final answer
    x = 30,280,512.90

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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.