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Finding the Third Proportional to 64,891.13 and 99,645.19

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Solution

The third proportional to 64,891.13 and 99,645.19 is: 153,012.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,891.13 : 99,645.19 = 99,645.19 : x
  2. Step 2: Convert to fraction form
    64,891.13/99,645.19 = 99,645.19/x
  3. Step 3: Cross multiply
    64,891.13x = 99,645.19 × 99,645.19
  4. Step 4: Simplify right side
    64,891.13x = 9,929,163,391.91
  5. Step 5: Solve for x
    x = 9,929,163,391.91/64,891.13
  6. Step 6: Final answer
    x = 153,012.66

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.