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Finding the Third Proportional to 1,111,861.69 and 1,681,806.80

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Solution

The third proportional to 1,111,861.69 and 1,681,806.80 is: 2,543,908.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,861.69 : 1,681,806.80 = 1,681,806.80 : x
  2. Step 2: Convert to fraction form
    1,111,861.69/1,681,806.80 = 1,681,806.80/x
  3. Step 3: Cross multiply
    1,111,861.69x = 1,681,806.80 × 1,681,806.80
  4. Step 4: Simplify right side
    1,111,861.69x = 2,828,474,102,014.95
  5. Step 5: Solve for x
    x = 2,828,474,102,014.95/1,111,861.69
  6. Step 6: Final answer
    x = 2,543,908.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.