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Finding the Third Proportional to 405,076 and 886,396

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Solution

The third proportional to 405,076 and 886,396 is: 1,939,630.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,076 : 886,396 = 886,396 : x
  2. Step 2: Convert to fraction form
    405,076/886,396 = 886,396/x
  3. Step 3: Cross multiply
    405,076x = 886,396 × 886,396
  4. Step 4: Simplify right side
    405,076x = 785,697,868,816
  5. Step 5: Solve for x
    x = 785,697,868,816/405,076
  6. Step 6: Final answer
    x = 1,939,630.76

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.