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Finding the Fourth Proportional to 53,861.80, 80,765.35 and 40,411.75

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Solution

The fourth proportional to 53,861.80, 80,765.35 and 40,411.75 is: 60,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,861.80 : 80,765.35 = 40,411.75 : x
  2. Step 2: Convert to fraction form
    53,861.80/80,765.35 = 40,411.75/x
  3. Step 3: Cross multiply
    53,861.80x = 80,765.35 × 40,411.75
  4. Step 4: Simplify right side
    53,861.80x = 3,263,868,526.98
  5. Step 5: Solve for x
    x = 3,263,868,526.98/53,861.80
  6. Step 6: Final answer
    x = 60,597.10

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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.