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Finding the Fourth Proportional to 74,555.50, 102,886.59 and 41,021.50

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Solution

The fourth proportional to 74,555.50, 102,886.59 and 41,021.50 is: 56,609.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,555.50 : 102,886.59 = 41,021.50 : x
  2. Step 2: Convert to fraction form
    74,555.50/102,886.59 = 41,021.50/x
  3. Step 3: Cross multiply
    74,555.50x = 102,886.59 × 41,021.50
  4. Step 4: Simplify right side
    74,555.50x = 4,220,562,251.69
  5. Step 5: Solve for x
    x = 4,220,562,251.69/74,555.50
  6. Step 6: Final answer
    x = 56,609.67

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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.