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Finding the Third Proportional to 416,187 and 623,139

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Solution

The third proportional to 416,187 and 623,139 is: 932,999.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,187 : 623,139 = 623,139 : x
  2. Step 2: Convert to fraction form
    416,187/623,139 = 623,139/x
  3. Step 3: Cross multiply
    416,187x = 623,139 × 623,139
  4. Step 4: Simplify right side
    416,187x = 388,302,213,321
  5. Step 5: Solve for x
    x = 388,302,213,321/416,187
  6. Step 6: Final answer
    x = 932,999.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.