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Finding the Fourth Proportional to 19,112.88, 26,336.88 and 14,636.64

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Solution

The fourth proportional to 19,112.88, 26,336.88 and 14,636.64 is: 20,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.88 : 26,336.88 = 14,636.64 : x
  2. Step 2: Convert to fraction form
    19,112.88/26,336.88 = 14,636.64/x
  3. Step 3: Cross multiply
    19,112.88x = 26,336.88 × 14,636.64
  4. Step 4: Simplify right side
    19,112.88x = 385,483,431.28
  5. Step 5: Solve for x
    x = 385,483,431.28/19,112.88
  6. Step 6: Final answer
    x = 20,168.78

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Half scale
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Double scale
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Similar ratio
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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.