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Finding the Third Proportional to 271,584 and 399,060

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Solution

The third proportional to 271,584 and 399,060 is: 586,370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,584 : 399,060 = 399,060 : x
  2. Step 2: Convert to fraction form
    271,584/399,060 = 399,060/x
  3. Step 3: Cross multiply
    271,584x = 399,060 × 399,060
  4. Step 4: Simplify right side
    271,584x = 159,248,883,600
  5. Step 5: Solve for x
    x = 159,248,883,600/271,584
  6. Step 6: Final answer
    x = 586,370.64

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.