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Finding the Fourth Proportional to 78,806.54, 118,210.84 and 26,216.03

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Solution

The fourth proportional to 78,806.54, 118,210.84 and 26,216.03 is: 39,324.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,806.54 : 118,210.84 = 26,216.03 : x
  2. Step 2: Convert to fraction form
    78,806.54/118,210.84 = 26,216.03/x
  3. Step 3: Cross multiply
    78,806.54x = 118,210.84 × 26,216.03
  4. Step 4: Simplify right side
    78,806.54x = 3,099,018,205.63
  5. Step 5: Solve for x
    x = 3,099,018,205.63/78,806.54
  6. Step 6: Final answer
    x = 39,324.38

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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.