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Finding the Fourth Proportional to 143,879.40, 215,835.30 and 44,038.80

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Solution

The fourth proportional to 143,879.40, 215,835.30 and 44,038.80 is: 66,063.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,879.40 : 215,835.30 = 44,038.80 : x
  2. Step 2: Convert to fraction form
    143,879.40/215,835.30 = 44,038.80/x
  3. Step 3: Cross multiply
    143,879.40x = 215,835.30 × 44,038.80
  4. Step 4: Simplify right side
    143,879.40x = 9,505,127,609.64
  5. Step 5: Solve for x
    x = 9,505,127,609.64/143,879.40
  6. Step 6: Final answer
    x = 66,063.16

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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.