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Finding the Fourth Proportional to 8,559.72, 11,809.26 and 5,021.64

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Solution

The fourth proportional to 8,559.72, 11,809.26 and 5,021.64 is: 6,928.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.72 : 11,809.26 = 5,021.64 : x
  2. Step 2: Convert to fraction form
    8,559.72/11,809.26 = 5,021.64/x
  3. Step 3: Cross multiply
    8,559.72x = 11,809.26 × 5,021.64
  4. Step 4: Simplify right side
    8,559.72x = 59,301,852.39
  5. Step 5: Solve for x
    x = 59,301,852.39/8,559.72
  6. Step 6: Final answer
    x = 6,928.01

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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.