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Finding the Third Proportional to 1,418,657.63 and 1,990,658.25

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Solution

The third proportional to 1,418,657.63 and 1,990,658.25 is: 2,793,288.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418,657.63 : 1,990,658.25 = 1,990,658.25 : x
  2. Step 2: Convert to fraction form
    1,418,657.63/1,990,658.25 = 1,990,658.25/x
  3. Step 3: Cross multiply
    1,418,657.63x = 1,990,658.25 × 1,990,658.25
  4. Step 4: Simplify right side
    1,418,657.63x = 3,962,720,268,293.06
  5. Step 5: Solve for x
    x = 3,962,720,268,293.06/1,418,657.63
  6. Step 6: Final answer
    x = 2,793,288.67

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.