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Finding the Third Proportional to 64,920.50 and 97,121

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Solution

The third proportional to 64,920.50 and 97,121 is: 145,292.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,920.50 : 97,121 = 97,121 : x
  2. Step 2: Convert to fraction form
    64,920.50/97,121 = 97,121/x
  3. Step 3: Cross multiply
    64,920.50x = 97,121 × 97,121
  4. Step 4: Simplify right side
    64,920.50x = 9,432,488,641
  5. Step 5: Solve for x
    x = 9,432,488,641/64,920.50
  6. Step 6: Final answer
    x = 145,292.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.