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Finding the Fourth Proportional to 79,580.21, 109,806.03 and 47,325.60

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Solution

The fourth proportional to 79,580.21, 109,806.03 and 47,325.60 is: 65,300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,580.21 : 109,806.03 = 47,325.60 : x
  2. Step 2: Convert to fraction form
    79,580.21/109,806.03 = 47,325.60/x
  3. Step 3: Cross multiply
    79,580.21x = 109,806.03 × 47,325.60
  4. Step 4: Simplify right side
    79,580.21x = 5,196,636,253.37
  5. Step 5: Solve for x
    x = 5,196,636,253.37/79,580.21
  6. Step 6: Final answer
    x = 65,300.61

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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.