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Finding the Third Proportional to 917,287 and 2,158,321.75

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Solution

The third proportional to 917,287 and 2,158,321.75 is: 5,078,402.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,287 : 2,158,321.75 = 2,158,321.75 : x
  2. Step 2: Convert to fraction form
    917,287/2,158,321.75 = 2,158,321.75/x
  3. Step 3: Cross multiply
    917,287x = 2,158,321.75 × 2,158,321.75
  4. Step 4: Simplify right side
    917,287x = 4,658,352,776,523.06
  5. Step 5: Solve for x
    x = 4,658,352,776,523.06/917,287
  6. Step 6: Final answer
    x = 5,078,402.70

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.