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Finding the Fourth Proportional to 32,470.60, 48,749.70 and 20,806.60

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Solution

The fourth proportional to 32,470.60, 48,749.70 and 20,806.60 is: 31,237.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,470.60 : 48,749.70 = 20,806.60 : x
  2. Step 2: Convert to fraction form
    32,470.60/48,749.70 = 20,806.60/x
  3. Step 3: Cross multiply
    32,470.60x = 48,749.70 × 20,806.60
  4. Step 4: Simplify right side
    32,470.60x = 1,014,315,508.02
  5. Step 5: Solve for x
    x = 1,014,315,508.02/32,470.60
  6. Step 6: Final answer
    x = 31,237.97

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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.