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Finding the Fourth Proportional to 5,245.28, 7,876.28 and 3,055.60

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Solution

The fourth proportional to 5,245.28, 7,876.28 and 3,055.60 is: 4,588.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.28 : 7,876.28 = 3,055.60 : x
  2. Step 2: Convert to fraction form
    5,245.28/7,876.28 = 3,055.60/x
  3. Step 3: Cross multiply
    5,245.28x = 7,876.28 × 3,055.60
  4. Step 4: Simplify right side
    5,245.28x = 24,066,761.17
  5. Step 5: Solve for x
    x = 24,066,761.17/5,245.28
  6. Step 6: Final answer
    x = 4,588.27

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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.