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Finding the Fourth Proportional to 174,268.80, 261,057.60 and 103,939.20

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Solution

The fourth proportional to 174,268.80, 261,057.60 and 103,939.20 is: 155,702.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,268.80 : 261,057.60 = 103,939.20 : x
  2. Step 2: Convert to fraction form
    174,268.80/261,057.60 = 103,939.20/x
  3. Step 3: Cross multiply
    174,268.80x = 261,057.60 × 103,939.20
  4. Step 4: Simplify right side
    174,268.80x = 27,134,118,097.92
  5. Step 5: Solve for x
    x = 27,134,118,097.92/174,268.80
  6. Step 6: Final answer
    x = 155,702.67

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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.