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Finding the Third Proportional to 623,812 and 991,708

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Solution

The third proportional to 623,812 and 991,708 is: 1,576,572.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,812 : 991,708 = 991,708 : x
  2. Step 2: Convert to fraction form
    623,812/991,708 = 991,708/x
  3. Step 3: Cross multiply
    623,812x = 991,708 × 991,708
  4. Step 4: Simplify right side
    623,812x = 983,484,757,264
  5. Step 5: Solve for x
    x = 983,484,757,264/623,812
  6. Step 6: Final answer
    x = 1,576,572.36

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.