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Finding the Third Proportional to 1,286,570.75 and 1,892,434.13

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Solution

The third proportional to 1,286,570.75 and 1,892,434.13 is: 2,783,606.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,570.75 : 1,892,434.13 = 1,892,434.13 : x
  2. Step 2: Convert to fraction form
    1,286,570.75/1,892,434.13 = 1,892,434.13/x
  3. Step 3: Cross multiply
    1,286,570.75x = 1,892,434.13 × 1,892,434.13
  4. Step 4: Simplify right side
    1,286,570.75x = 3,581,306,917,464.52
  5. Step 5: Solve for x
    x = 3,581,306,917,464.52/1,286,570.75
  6. Step 6: Final answer
    x = 2,783,606.67

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.