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Finding the Fourth Proportional to 1,969,979.67, 2,718,571.95 and 1,064,561.67

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Solution

The fourth proportional to 1,969,979.67, 2,718,571.95 and 1,064,561.67 is: 1,469,095.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969,979.67 : 2,718,571.95 = 1,064,561.67 : x
  2. Step 2: Convert to fraction form
    1,969,979.67/2,718,571.95 = 1,064,561.67/x
  3. Step 3: Cross multiply
    1,969,979.67x = 2,718,571.95 × 1,064,561.67
  4. Step 4: Simplify right side
    1,969,979.67x = 2,894,087,495,107.16
  5. Step 5: Solve for x
    x = 2,894,087,495,107.16/1,969,979.67
  6. Step 6: Final answer
    x = 1,469,095.11

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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.