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Finding the Fourth Proportional to 111,544.80, 167,090.40 and 69,295.20

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Solution

The fourth proportional to 111,544.80, 167,090.40 and 69,295.20 is: 103,801.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,544.80 : 167,090.40 = 69,295.20 : x
  2. Step 2: Convert to fraction form
    111,544.80/167,090.40 = 69,295.20/x
  3. Step 3: Cross multiply
    111,544.80x = 167,090.40 × 69,295.20
  4. Step 4: Simplify right side
    111,544.80x = 11,578,562,686.08
  5. Step 5: Solve for x
    x = 11,578,562,686.08/111,544.80
  6. Step 6: Final answer
    x = 103,801.90

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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.