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Finding the Third Proportional to 163,112 and 358,300

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Solution

The third proportional to 163,112 and 358,300 is: 787,059.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,112 : 358,300 = 358,300 : x
  2. Step 2: Convert to fraction form
    163,112/358,300 = 358,300/x
  3. Step 3: Cross multiply
    163,112x = 358,300 × 358,300
  4. Step 4: Simplify right side
    163,112x = 128,378,890,000
  5. Step 5: Solve for x
    x = 128,378,890,000/163,112
  6. Step 6: Final answer
    x = 787,059.75

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.