Home / 18,947,109-28,409,784.45-7,419,078.91

Finding the Fourth Proportional to 18,947,109, 28,409,784.45 and 7,419,078.91

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Solution

The fourth proportional to 18,947,109, 28,409,784.45 and 7,419,078.91 is: 11,124,358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,109 : 28,409,784.45 = 7,419,078.91 : x
  2. Step 2: Convert to fraction form
    18,947,109/28,409,784.45 = 7,419,078.91/x
  3. Step 3: Cross multiply
    18,947,109x = 28,409,784.45 × 7,419,078.91
  4. Step 4: Simplify right side
    18,947,109x = 210,774,432,650,640.94
  5. Step 5: Solve for x
    x = 210,774,432,650,640.94/18,947,109
  6. Step 6: Final answer
    x = 11,124,358.48

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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.