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Finding the Fourth Proportional to 1,067.57, 1,473.44 and 848.20

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Solution

The fourth proportional to 1,067.57, 1,473.44 and 848.20 is: 1,170.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.57 : 1,473.44 = 848.20 : x
  2. Step 2: Convert to fraction form
    1,067.57/1,473.44 = 848.20/x
  3. Step 3: Cross multiply
    1,067.57x = 1,473.44 × 848.20
  4. Step 4: Simplify right side
    1,067.57x = 1,249,771.81
  5. Step 5: Solve for x
    x = 1,249,771.81/1,067.57
  6. Step 6: Final answer
    x = 1,170.67

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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.