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Finding the Fourth Proportional to 104,521.59, 144,299.64 and 68,815.41

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Solution

The fourth proportional to 104,521.59, 144,299.64 and 68,815.41 is: 95,004.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,521.59 : 144,299.64 = 68,815.41 : x
  2. Step 2: Convert to fraction form
    104,521.59/144,299.64 = 68,815.41/x
  3. Step 3: Cross multiply
    104,521.59x = 144,299.64 × 68,815.41
  4. Step 4: Simplify right side
    104,521.59x = 9,930,038,889.45
  5. Step 5: Solve for x
    x = 9,930,038,889.45/104,521.59
  6. Step 6: Final answer
    x = 95,004.67

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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.