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Finding the Third Proportional to 623,821.50 and 891,405

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Solution

The third proportional to 623,821.50 and 891,405 is: 1,273,766.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,821.50 : 891,405 = 891,405 : x
  2. Step 2: Convert to fraction form
    623,821.50/891,405 = 891,405/x
  3. Step 3: Cross multiply
    623,821.50x = 891,405 × 891,405
  4. Step 4: Simplify right side
    623,821.50x = 794,602,874,025
  5. Step 5: Solve for x
    x = 794,602,874,025/623,821.50
  6. Step 6: Final answer
    x = 1,273,766.41

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.