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Finding the Fourth Proportional to 125,624.72, 188,438.16 and 36,879.68

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Solution

The fourth proportional to 125,624.72, 188,438.16 and 36,879.68 is: 55,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,624.72 : 188,438.16 = 36,879.68 : x
  2. Step 2: Convert to fraction form
    125,624.72/188,438.16 = 36,879.68/x
  3. Step 3: Cross multiply
    125,624.72x = 188,438.16 × 36,879.68
  4. Step 4: Simplify right side
    125,624.72x = 6,949,539,040.59
  5. Step 5: Solve for x
    x = 6,949,539,040.59/125,624.72
  6. Step 6: Final answer
    x = 55,319.84

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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.