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Finding the Third Proportional to 5,461 and 8,403

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Solution

The third proportional to 5,461 and 8,403 is: 12,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,461 : 8,403 = 8,403 : x
  2. Step 2: Convert to fraction form
    5,461/8,403 = 8,403/x
  3. Step 3: Cross multiply
    5,461x = 8,403 × 8,403
  4. Step 4: Simplify right side
    5,461x = 70,610,409
  5. Step 5: Solve for x
    x = 70,610,409/5,461
  6. Step 6: Final answer
    x = 12,929.94

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.