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Finding the Third Proportional to 517,381 and 772,886

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Solution

The third proportional to 517,381 and 772,886 is: 1,154,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,381 : 772,886 = 772,886 : x
  2. Step 2: Convert to fraction form
    517,381/772,886 = 772,886/x
  3. Step 3: Cross multiply
    517,381x = 772,886 × 772,886
  4. Step 4: Simplify right side
    517,381x = 597,352,768,996
  5. Step 5: Solve for x
    x = 597,352,768,996/517,381
  6. Step 6: Final answer
    x = 1,154,570.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.