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Finding the Fourth Proportional to 72,336.72, 108,671.84 and 69,347.41

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Solution

The fourth proportional to 72,336.72, 108,671.84 and 69,347.41 is: 104,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,336.72 : 108,671.84 = 69,347.41 : x
  2. Step 2: Convert to fraction form
    72,336.72/108,671.84 = 69,347.41/x
  3. Step 3: Cross multiply
    72,336.72x = 108,671.84 × 69,347.41
  4. Step 4: Simplify right side
    72,336.72x = 7,536,110,643.93
  5. Step 5: Solve for x
    x = 7,536,110,643.93/72,336.72
  6. Step 6: Final answer
    x = 104,180.98

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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.