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Finding the Fourth Proportional to 8,507.25, 12,760.88 and 3,316.77

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Solution

The fourth proportional to 8,507.25, 12,760.88 and 3,316.77 is: 4,975.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.25 : 12,760.88 = 3,316.77 : x
  2. Step 2: Convert to fraction form
    8,507.25/12,760.88 = 3,316.77/x
  3. Step 3: Cross multiply
    8,507.25x = 12,760.88 × 3,316.77
  4. Step 4: Simplify right side
    8,507.25x = 42,324,887.37
  5. Step 5: Solve for x
    x = 42,324,887.37/8,507.25
  6. Step 6: Final answer
    x = 4,975.16

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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.