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Finding the Fourth Proportional to 10,636.64, 14,679.24 and 5,921.24

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Solution

The fourth proportional to 10,636.64, 14,679.24 and 5,921.24 is: 8,171.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,636.64 : 14,679.24 = 5,921.24 : x
  2. Step 2: Convert to fraction form
    10,636.64/14,679.24 = 5,921.24/x
  3. Step 3: Cross multiply
    10,636.64x = 14,679.24 × 5,921.24
  4. Step 4: Simplify right side
    10,636.64x = 86,919,303.06
  5. Step 5: Solve for x
    x = 86,919,303.06/10,636.64
  6. Step 6: Final answer
    x = 8,171.69

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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.