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Finding the Third Proportional to 219,128.63 and 330,135.75

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Solution

The third proportional to 219,128.63 and 330,135.75 is: 497,377.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,128.63 : 330,135.75 = 330,135.75 : x
  2. Step 2: Convert to fraction form
    219,128.63/330,135.75 = 330,135.75/x
  3. Step 3: Cross multiply
    219,128.63x = 330,135.75 × 330,135.75
  4. Step 4: Simplify right side
    219,128.63x = 108,989,613,428.06
  5. Step 5: Solve for x
    x = 108,989,613,428.06/219,128.63
  6. Step 6: Final answer
    x = 497,377.34

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.