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Finding the Third Proportional to 619,331 and 905,095

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Solution

The third proportional to 619,331 and 905,095 is: 1,322,712.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,331 : 905,095 = 905,095 : x
  2. Step 2: Convert to fraction form
    619,331/905,095 = 905,095/x
  3. Step 3: Cross multiply
    619,331x = 905,095 × 905,095
  4. Step 4: Simplify right side
    619,331x = 819,196,959,025
  5. Step 5: Solve for x
    x = 819,196,959,025/619,331
  6. Step 6: Final answer
    x = 1,322,712.67

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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.