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Finding the Third Proportional to 160,312 and 250,172

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Solution

The third proportional to 160,312 and 250,172 is: 390,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,312 : 250,172 = 250,172 : x
  2. Step 2: Convert to fraction form
    160,312/250,172 = 250,172/x
  3. Step 3: Cross multiply
    160,312x = 250,172 × 250,172
  4. Step 4: Simplify right side
    160,312x = 62,586,029,584
  5. Step 5: Solve for x
    x = 62,586,029,584/160,312
  6. Step 6: Final answer
    x = 390,401.40

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.