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Finding the Fourth Proportional to 199,085.76, 274,738.36 and 109,661.76

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Solution

The fourth proportional to 199,085.76, 274,738.36 and 109,661.76 is: 151,333.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,085.76 : 274,738.36 = 109,661.76 : x
  2. Step 2: Convert to fraction form
    199,085.76/274,738.36 = 109,661.76/x
  3. Step 3: Cross multiply
    199,085.76x = 274,738.36 × 109,661.76
  4. Step 4: Simplify right side
    199,085.76x = 30,128,292,097.11
  5. Step 5: Solve for x
    x = 30,128,292,097.11/199,085.76
  6. Step 6: Final answer
    x = 151,333.23

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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.