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Finding the Fourth Proportional to 8,633.64, 11,918.72 and 5,853.72

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Solution

The fourth proportional to 8,633.64, 11,918.72 and 5,853.72 is: 8,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.64 : 11,918.72 = 5,853.72 : x
  2. Step 2: Convert to fraction form
    8,633.64/11,918.72 = 5,853.72/x
  3. Step 3: Cross multiply
    8,633.64x = 11,918.72 × 5,853.72
  4. Step 4: Simplify right side
    8,633.64x = 69,768,849.64
  5. Step 5: Solve for x
    x = 69,768,849.64/8,633.64
  6. Step 6: Final answer
    x = 8,081.05

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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.