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Finding the Fourth Proportional to 104,798.80, 156,889.32 and 69,194.80

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Solution

The fourth proportional to 104,798.80, 156,889.32 and 69,194.80 is: 103,588.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,798.80 : 156,889.32 = 69,194.80 : x
  2. Step 2: Convert to fraction form
    104,798.80/156,889.32 = 69,194.80/x
  3. Step 3: Cross multiply
    104,798.80x = 156,889.32 × 69,194.80
  4. Step 4: Simplify right side
    104,798.80x = 10,855,925,119.54
  5. Step 5: Solve for x
    x = 10,855,925,119.54/104,798.80
  6. Step 6: Final answer
    x = 103,588.26

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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.