Home / 12,378,740.80-18,568,111.20-11,538,932.80

Finding the Fourth Proportional to 12,378,740.80, 18,568,111.20 and 11,538,932.80

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Solution

The fourth proportional to 12,378,740.80, 18,568,111.20 and 11,538,932.80 is: 17,308,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378,740.80 : 18,568,111.20 = 11,538,932.80 : x
  2. Step 2: Convert to fraction form
    12,378,740.80/18,568,111.20 = 11,538,932.80/x
  3. Step 3: Cross multiply
    12,378,740.80x = 18,568,111.20 × 11,538,932.80
  4. Step 4: Simplify right side
    12,378,740.80x = 214,256,187,359,727.38
  5. Step 5: Solve for x
    x = 214,256,187,359,727.38/12,378,740.80
  6. Step 6: Final answer
    x = 17,308,399.20

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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.