Home / 12,393,011.20-18,589,516.80-8,991,788.80

Finding the Fourth Proportional to 12,393,011.20, 18,589,516.80 and 8,991,788.80

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Solution

The fourth proportional to 12,393,011.20, 18,589,516.80 and 8,991,788.80 is: 13,487,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393,011.20 : 18,589,516.80 = 8,991,788.80 : x
  2. Step 2: Convert to fraction form
    12,393,011.20/18,589,516.80 = 8,991,788.80/x
  3. Step 3: Cross multiply
    12,393,011.20x = 18,589,516.80 × 8,991,788.80
  4. Step 4: Simplify right side
    12,393,011.20x = 167,153,008,959,651.88
  5. Step 5: Solve for x
    x = 167,153,008,959,651.88/12,393,011.20
  6. Step 6: Final answer
    x = 13,487,683.20

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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.