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Finding the Fourth Proportional to 57,059.76, 85,597.68 and 17,620.08

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Solution

The fourth proportional to 57,059.76, 85,597.68 and 17,620.08 is: 26,432.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,059.76 : 85,597.68 = 17,620.08 : x
  2. Step 2: Convert to fraction form
    57,059.76/85,597.68 = 17,620.08/x
  3. Step 3: Cross multiply
    57,059.76x = 85,597.68 × 17,620.08
  4. Step 4: Simplify right side
    57,059.76x = 1,508,237,969.41
  5. Step 5: Solve for x
    x = 1,508,237,969.41/57,059.76
  6. Step 6: Final answer
    x = 26,432.60

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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.