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Finding the Fourth Proportional to 429,511.82, 644,266.92 and 113,943.92

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Solution

The fourth proportional to 429,511.82, 644,266.92 and 113,943.92 is: 170,915.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,511.82 : 644,266.92 = 113,943.92 : x
  2. Step 2: Convert to fraction form
    429,511.82/644,266.92 = 113,943.92/x
  3. Step 3: Cross multiply
    429,511.82x = 644,266.92 × 113,943.92
  4. Step 4: Simplify right side
    429,511.82x = 73,410,298,391.13
  5. Step 5: Solve for x
    x = 73,410,298,391.13/429,511.82
  6. Step 6: Final answer
    x = 170,915.67

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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.