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Finding the Fourth Proportional to 5,617.76, 7,749.56 and 4,556.76

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Solution

The fourth proportional to 5,617.76, 7,749.56 and 4,556.76 is: 6,285.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,617.76 : 7,749.56 = 4,556.76 : x
  2. Step 2: Convert to fraction form
    5,617.76/7,749.56 = 4,556.76/x
  3. Step 3: Cross multiply
    5,617.76x = 7,749.56 × 4,556.76
  4. Step 4: Simplify right side
    5,617.76x = 35,312,896.42
  5. Step 5: Solve for x
    x = 35,312,896.42/5,617.76
  6. Step 6: Final answer
    x = 6,285.94

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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.