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Finding the Fourth Proportional to 40,383.94, 60,578.34 and 12,681.94

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Solution

The fourth proportional to 40,383.94, 60,578.34 and 12,681.94 is: 19,023.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,383.94 : 60,578.34 = 12,681.94 : x
  2. Step 2: Convert to fraction form
    40,383.94/60,578.34 = 12,681.94/x
  3. Step 3: Cross multiply
    40,383.94x = 60,578.34 × 12,681.94
  4. Step 4: Simplify right side
    40,383.94x = 768,250,873.18
  5. Step 5: Solve for x
    x = 768,250,873.18/40,383.94
  6. Step 6: Final answer
    x = 19,023.67

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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.