Home / 18,928,643.70-28,392,965.55-11,370,371.70

Finding the Fourth Proportional to 18,928,643.70, 28,392,965.55 and 11,370,371.70

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Solution

The fourth proportional to 18,928,643.70, 28,392,965.55 and 11,370,371.70 is: 17,055,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,643.70 : 28,392,965.55 = 11,370,371.70 : x
  2. Step 2: Convert to fraction form
    18,928,643.70/28,392,965.55 = 11,370,371.70/x
  3. Step 3: Cross multiply
    18,928,643.70x = 28,392,965.55 × 11,370,371.70
  4. Step 4: Simplify right side
    18,928,643.70x = 322,838,571,968,794.94
  5. Step 5: Solve for x
    x = 322,838,571,968,794.94/18,928,643.70
  6. Step 6: Final answer
    x = 17,055,557.55

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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.