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Finding the Fourth Proportional to 79,200.72, 118,800 and 26,602.56

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Solution

The fourth proportional to 79,200.72, 118,800 and 26,602.56 is: 39,903.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.72 : 118,800 = 26,602.56 : x
  2. Step 2: Convert to fraction form
    79,200.72/118,800 = 26,602.56/x
  3. Step 3: Cross multiply
    79,200.72x = 118,800 × 26,602.56
  4. Step 4: Simplify right side
    79,200.72x = 3,160,384,128
  5. Step 5: Solve for x
    x = 3,160,384,128/79,200.72
  6. Step 6: Final answer
    x = 39,903.48

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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.