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Finding the Third Proportional to 1,986,636.38 and 4,290,813

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Solution

The third proportional to 1,986,636.38 and 4,290,813 is: 9,267,461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,636.38 : 4,290,813 = 4,290,813 : x
  2. Step 2: Convert to fraction form
    1,986,636.38/4,290,813 = 4,290,813/x
  3. Step 3: Cross multiply
    1,986,636.38x = 4,290,813 × 4,290,813
  4. Step 4: Simplify right side
    1,986,636.38x = 18,411,076,200,969
  5. Step 5: Solve for x
    x = 18,411,076,200,969/1,986,636.38
  6. Step 6: Final answer
    x = 9,267,461.54

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.