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Finding the Third Proportional to 163,542 and 358,188

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Solution

The third proportional to 163,542 and 358,188 is: 784,499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,542 : 358,188 = 358,188 : x
  2. Step 2: Convert to fraction form
    163,542/358,188 = 358,188/x
  3. Step 3: Cross multiply
    163,542x = 358,188 × 358,188
  4. Step 4: Simplify right side
    163,542x = 128,298,643,344
  5. Step 5: Solve for x
    x = 128,298,643,344/163,542
  6. Step 6: Final answer
    x = 784,499.66

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.