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Finding the Fourth Proportional to 140,978.93, 211,488.50 and 46,188.85

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Solution

The fourth proportional to 140,978.93, 211,488.50 and 46,188.85 is: 69,289.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,978.93 : 211,488.50 = 46,188.85 : x
  2. Step 2: Convert to fraction form
    140,978.93/211,488.50 = 46,188.85/x
  3. Step 3: Cross multiply
    140,978.93x = 211,488.50 × 46,188.85
  4. Step 4: Simplify right side
    140,978.93x = 9,768,410,084.32
  5. Step 5: Solve for x
    x = 9,768,410,084.32/140,978.93
  6. Step 6: Final answer
    x = 69,289.86

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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.