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Finding the Fourth Proportional to 74,554.50, 102,885.21 and 41,020.50

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Solution

The fourth proportional to 74,554.50, 102,885.21 and 41,020.50 is: 56,608.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,554.50 : 102,885.21 = 41,020.50 : x
  2. Step 2: Convert to fraction form
    74,554.50/102,885.21 = 41,020.50/x
  3. Step 3: Cross multiply
    74,554.50x = 102,885.21 × 41,020.50
  4. Step 4: Simplify right side
    74,554.50x = 4,220,402,756.81
  5. Step 5: Solve for x
    x = 4,220,402,756.81/74,554.50
  6. Step 6: Final answer
    x = 56,608.29

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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.