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Finding the Fourth Proportional to 72,847.10, 100,527.48 and 40,581.67

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Solution

The fourth proportional to 72,847.10, 100,527.48 and 40,581.67 is: 56,001.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,847.10 : 100,527.48 = 40,581.67 : x
  2. Step 2: Convert to fraction form
    72,847.10/100,527.48 = 40,581.67/x
  3. Step 3: Cross multiply
    72,847.10x = 100,527.48 × 40,581.67
  4. Step 4: Simplify right side
    72,847.10x = 4,079,572,810.39
  5. Step 5: Solve for x
    x = 4,079,572,810.39/72,847.10
  6. Step 6: Final answer
    x = 56,001.86

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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.