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Finding the Fourth Proportional to 7,094.76, 9,790.78 and 3,951.68

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Solution

The fourth proportional to 7,094.76, 9,790.78 and 3,951.68 is: 5,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,094.76 : 9,790.78 = 3,951.68 : x
  2. Step 2: Convert to fraction form
    7,094.76/9,790.78 = 3,951.68/x
  3. Step 3: Cross multiply
    7,094.76x = 9,790.78 × 3,951.68
  4. Step 4: Simplify right side
    7,094.76x = 38,690,029.51
  5. Step 5: Solve for x
    x = 38,690,029.51/7,094.76
  6. Step 6: Final answer
    x = 5,453.32

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Half scale
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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.