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Finding the Fourth Proportional to 13,508.64, 20,266.17 and 4,274.64

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Solution

The fourth proportional to 13,508.64, 20,266.17 and 4,274.64 is: 6,412.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.64 : 20,266.17 = 4,274.64 : x
  2. Step 2: Convert to fraction form
    13,508.64/20,266.17 = 4,274.64/x
  3. Step 3: Cross multiply
    13,508.64x = 20,266.17 × 4,274.64
  4. Step 4: Simplify right side
    13,508.64x = 86,630,580.93
  5. Step 5: Solve for x
    x = 86,630,580.93/13,508.64
  6. Step 6: Final answer
    x = 6,412.98

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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.