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Finding the Fourth Proportional to 3,526.48, 5,290.17 and 1,185.48

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Solution

The fourth proportional to 3,526.48, 5,290.17 and 1,185.48 is: 1,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,526.48 : 5,290.17 = 1,185.48 : x
  2. Step 2: Convert to fraction form
    3,526.48/5,290.17 = 1,185.48/x
  3. Step 3: Cross multiply
    3,526.48x = 5,290.17 × 1,185.48
  4. Step 4: Simplify right side
    3,526.48x = 6,271,390.73
  5. Step 5: Solve for x
    x = 6,271,390.73/3,526.48
  6. Step 6: Final answer
    x = 1,778.37

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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.