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Finding the Fourth Proportional to 79,315.52, 109,455.60 and 43,505.67

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Solution

The fourth proportional to 79,315.52, 109,455.60 and 43,505.67 is: 60,037.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,315.52 : 109,455.60 = 43,505.67 : x
  2. Step 2: Convert to fraction form
    79,315.52/109,455.60 = 43,505.67/x
  3. Step 3: Cross multiply
    79,315.52x = 109,455.60 × 43,505.67
  4. Step 4: Simplify right side
    79,315.52x = 4,761,939,786.86
  5. Step 5: Solve for x
    x = 4,761,939,786.86/79,315.52
  6. Step 6: Final answer
    x = 60,037.93

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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.