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Finding the Fourth Proportional to 57,771.20, 86,527.20 and 56,475.20

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Solution

The fourth proportional to 57,771.20, 86,527.20 and 56,475.20 is: 84,586.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,771.20 : 86,527.20 = 56,475.20 : x
  2. Step 2: Convert to fraction form
    57,771.20/86,527.20 = 56,475.20/x
  3. Step 3: Cross multiply
    57,771.20x = 86,527.20 × 56,475.20
  4. Step 4: Simplify right side
    57,771.20x = 4,886,640,925.44
  5. Step 5: Solve for x
    x = 4,886,640,925.44/57,771.20
  6. Step 6: Final answer
    x = 84,586.11

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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.