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Finding the Fourth Proportional to 3,556.36, 5,333.80 and 958.68

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Solution

The fourth proportional to 3,556.36, 5,333.80 and 958.68 is: 1,437.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.36 : 5,333.80 = 958.68 : x
  2. Step 2: Convert to fraction form
    3,556.36/5,333.80 = 958.68/x
  3. Step 3: Cross multiply
    3,556.36x = 5,333.80 × 958.68
  4. Step 4: Simplify right side
    3,556.36x = 5,113,407.38
  5. Step 5: Solve for x
    x = 5,113,407.38/3,556.36
  6. Step 6: Final answer
    x = 1,437.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.