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Finding the Fourth Proportional to 10,662,406.80, 15,993,610.20 and 3,089,619.60

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Solution

The fourth proportional to 10,662,406.80, 15,993,610.20 and 3,089,619.60 is: 4,634,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662,406.80 : 15,993,610.20 = 3,089,619.60 : x
  2. Step 2: Convert to fraction form
    10,662,406.80/15,993,610.20 = 3,089,619.60/x
  3. Step 3: Cross multiply
    10,662,406.80x = 15,993,610.20 × 3,089,619.60
  4. Step 4: Simplify right side
    10,662,406.80x = 49,414,171,548,679.92
  5. Step 5: Solve for x
    x = 49,414,171,548,679.92/10,662,406.80
  6. Step 6: Final answer
    x = 4,634,429.40

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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.