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Finding the Fourth Proportional to 7,179.14, 9,905.82 and 4,661.06

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Solution

The fourth proportional to 7,179.14, 9,905.82 and 4,661.06 is: 6,431.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.14 : 9,905.82 = 4,661.06 : x
  2. Step 2: Convert to fraction form
    7,179.14/9,905.82 = 4,661.06/x
  3. Step 3: Cross multiply
    7,179.14x = 9,905.82 × 4,661.06
  4. Step 4: Simplify right side
    7,179.14x = 46,171,621.37
  5. Step 5: Solve for x
    x = 46,171,621.37/7,179.14
  6. Step 6: Final answer
    x = 6,431.36

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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.