Home / 28,939,912.20-43,409,868.30-11,891,809.80

Finding the Fourth Proportional to 28,939,912.20, 43,409,868.30 and 11,891,809.80

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Solution

The fourth proportional to 28,939,912.20, 43,409,868.30 and 11,891,809.80 is: 17,837,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939,912.20 : 43,409,868.30 = 11,891,809.80 : x
  2. Step 2: Convert to fraction form
    28,939,912.20/43,409,868.30 = 11,891,809.80/x
  3. Step 3: Cross multiply
    28,939,912.20x = 43,409,868.30 × 11,891,809.80
  4. Step 4: Simplify right side
    28,939,912.20x = 516,221,897,266,649.31
  5. Step 5: Solve for x
    x = 516,221,897,266,649.31/28,939,912.20
  6. Step 6: Final answer
    x = 17,837,714.70

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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.