Home / 19,215,865.31-28,805,280.75-7,078,694.49

Finding the Fourth Proportional to 19,215,865.31, 28,805,280.75 and 7,078,694.49

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Solution

The fourth proportional to 19,215,865.31, 28,805,280.75 and 7,078,694.49 is: 10,611,220.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215,865.31 : 28,805,280.75 = 7,078,694.49 : x
  2. Step 2: Convert to fraction form
    19,215,865.31/28,805,280.75 = 7,078,694.49/x
  3. Step 3: Cross multiply
    19,215,865.31x = 28,805,280.75 × 7,078,694.49
  4. Step 4: Simplify right side
    19,215,865.31x = 203,903,782,127,928.06
  5. Step 5: Solve for x
    x = 203,903,782,127,928.06/19,215,865.31
  6. Step 6: Final answer
    x = 10,611,220.41

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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.