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Finding the Fourth Proportional to 5,674.88, 7,831.98 and 3,316.88

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Solution

The fourth proportional to 5,674.88, 7,831.98 and 3,316.88 is: 4,577.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,674.88 : 7,831.98 = 3,316.88 : x
  2. Step 2: Convert to fraction form
    5,674.88/7,831.98 = 3,316.88/x
  3. Step 3: Cross multiply
    5,674.88x = 7,831.98 × 3,316.88
  4. Step 4: Simplify right side
    5,674.88x = 25,977,698.66
  5. Step 5: Solve for x
    x = 25,977,698.66/5,674.88
  6. Step 6: Final answer
    x = 4,577.67

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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.