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Finding the Fourth Proportional to 125,586.40, 188,379.60 and 108,673.60

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Solution

The fourth proportional to 125,586.40, 188,379.60 and 108,673.60 is: 163,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,586.40 : 188,379.60 = 108,673.60 : x
  2. Step 2: Convert to fraction form
    125,586.40/188,379.60 = 108,673.60/x
  3. Step 3: Cross multiply
    125,586.40x = 188,379.60 × 108,673.60
  4. Step 4: Simplify right side
    125,586.40x = 20,471,889,298.56
  5. Step 5: Solve for x
    x = 20,471,889,298.56/125,586.40
  6. Step 6: Final answer
    x = 163,010.40

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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.