Home / 28,591,709.19-39,456,863.47-15,538,968.78

Finding the Fourth Proportional to 28,591,709.19, 39,456,863.47 and 15,538,968.78

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Solution

The fourth proportional to 28,591,709.19, 39,456,863.47 and 15,538,968.78 is: 21,443,942.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,591,709.19 : 39,456,863.47 = 15,538,968.78 : x
  2. Step 2: Convert to fraction form
    28,591,709.19/39,456,863.47 = 15,538,968.78/x
  3. Step 3: Cross multiply
    28,591,709.19x = 39,456,863.47 × 15,538,968.78
  4. Step 4: Simplify right side
    28,591,709.19x = 613,118,969,617,052.38
  5. Step 5: Solve for x
    x = 613,118,969,617,052.38/28,591,709.19
  6. Step 6: Final answer
    x = 21,443,942.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.