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Finding the Third Proportional to 619,356 and 905,136

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Solution

The third proportional to 619,356 and 905,136 is: 1,322,779.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,356 : 905,136 = 905,136 : x
  2. Step 2: Convert to fraction form
    619,356/905,136 = 905,136/x
  3. Step 3: Cross multiply
    619,356x = 905,136 × 905,136
  4. Step 4: Simplify right side
    619,356x = 819,271,178,496
  5. Step 5: Solve for x
    x = 819,271,178,496/619,356
  6. Step 6: Final answer
    x = 1,322,779.11

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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.