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Finding the Fourth Proportional to 3,556.12, 5,334.18 and 959.26

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Solution

The fourth proportional to 3,556.12, 5,334.18 and 959.26 is: 1,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.12 : 5,334.18 = 959.26 : x
  2. Step 2: Convert to fraction form
    3,556.12/5,334.18 = 959.26/x
  3. Step 3: Cross multiply
    3,556.12x = 5,334.18 × 959.26
  4. Step 4: Simplify right side
    3,556.12x = 5,116,865.51
  5. Step 5: Solve for x
    x = 5,116,865.51/3,556.12
  6. Step 6: Final answer
    x = 1,438.89

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1.5x scale

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.