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Finding the Fourth Proportional to 117,351.78, 161,945.39 and 63,636.63

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Solution

The fourth proportional to 117,351.78, 161,945.39 and 63,636.63 is: 87,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,351.78 : 161,945.39 = 63,636.63 : x
  2. Step 2: Convert to fraction form
    117,351.78/161,945.39 = 63,636.63/x
  3. Step 3: Cross multiply
    117,351.78x = 161,945.39 × 63,636.63
  4. Step 4: Simplify right side
    117,351.78x = 10,305,658,863.64
  5. Step 5: Solve for x
    x = 10,305,658,863.64/117,351.78
  6. Step 6: Final answer
    x = 87,818.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.