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Finding the Third Proportional to 517,509 and 785,598.75

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Solution

The third proportional to 517,509 and 785,598.75 is: 1,192,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,509 : 785,598.75 = 785,598.75 : x
  2. Step 2: Convert to fraction form
    517,509/785,598.75 = 785,598.75/x
  3. Step 3: Cross multiply
    517,509x = 785,598.75 × 785,598.75
  4. Step 4: Simplify right side
    517,509x = 617,165,396,001.56
  5. Step 5: Solve for x
    x = 617,165,396,001.56/517,509
  6. Step 6: Final answer
    x = 1,192,569.40

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.