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Finding the Third Proportional to 58,920 and 121,296

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Solution

The third proportional to 58,920 and 121,296 is: 249,706.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,920 : 121,296 = 121,296 : x
  2. Step 2: Convert to fraction form
    58,920/121,296 = 121,296/x
  3. Step 3: Cross multiply
    58,920x = 121,296 × 121,296
  4. Step 4: Simplify right side
    58,920x = 14,712,719,616
  5. Step 5: Solve for x
    x = 14,712,719,616/58,920
  6. Step 6: Final answer
    x = 249,706.71

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.