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Finding the Fourth Proportional to 78,592.96, 108,512.60 and 73,573.80

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Solution

The fourth proportional to 78,592.96, 108,512.60 and 73,573.80 is: 101,582.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,592.96 : 108,512.60 = 73,573.80 : x
  2. Step 2: Convert to fraction form
    78,592.96/108,512.60 = 73,573.80/x
  3. Step 3: Cross multiply
    78,592.96x = 108,512.60 × 73,573.80
  4. Step 4: Simplify right side
    78,592.96x = 7,983,684,329.88
  5. Step 5: Solve for x
    x = 7,983,684,329.88/78,592.96
  6. Step 6: Final answer
    x = 101,582.69

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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.