Home / 18,722,528.40-28,086,514.20-7,939,808.40

Finding the Fourth Proportional to 18,722,528.40, 28,086,514.20 and 7,939,808.40

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Solution

The fourth proportional to 18,722,528.40, 28,086,514.20 and 7,939,808.40 is: 11,910,866.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,528.40 : 28,086,514.20 = 7,939,808.40 : x
  2. Step 2: Convert to fraction form
    18,722,528.40/28,086,514.20 = 7,939,808.40/x
  3. Step 3: Cross multiply
    18,722,528.40x = 28,086,514.20 × 7,939,808.40
  4. Step 4: Simplify right side
    18,722,528.40x = 223,001,541,371,879.28
  5. Step 5: Solve for x
    x = 223,001,541,371,879.28/18,722,528.40
  6. Step 6: Final answer
    x = 11,910,866.77

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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.