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Finding the Fourth Proportional to 12,396.64, 18,590.10 and 4,999.24

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Solution

The fourth proportional to 12,396.64, 18,590.10 and 4,999.24 is: 7,496.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.64 : 18,590.10 = 4,999.24 : x
  2. Step 2: Convert to fraction form
    12,396.64/18,590.10 = 4,999.24/x
  3. Step 3: Cross multiply
    12,396.64x = 18,590.10 × 4,999.24
  4. Step 4: Simplify right side
    12,396.64x = 92,936,371.52
  5. Step 5: Solve for x
    x = 92,936,371.52/12,396.64
  6. Step 6: Final answer
    x = 7,496.90

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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.