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Finding the Third Proportional to 31,306 and 45,711

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Solution

The third proportional to 31,306 and 45,711 is: 66,744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,306 : 45,711 = 45,711 : x
  2. Step 2: Convert to fraction form
    31,306/45,711 = 45,711/x
  3. Step 3: Cross multiply
    31,306x = 45,711 × 45,711
  4. Step 4: Simplify right side
    31,306x = 2,089,495,521
  5. Step 5: Solve for x
    x = 2,089,495,521/31,306
  6. Step 6: Final answer
    x = 66,744.25

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.