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Finding the Fourth Proportional to 143,571.36, 215,364.48 and 43,723.84

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Solution

The fourth proportional to 143,571.36, 215,364.48 and 43,723.84 is: 65,588.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,571.36 : 215,364.48 = 43,723.84 : x
  2. Step 2: Convert to fraction form
    143,571.36/215,364.48 = 43,723.84/x
  3. Step 3: Cross multiply
    143,571.36x = 215,364.48 × 43,723.84
  4. Step 4: Simplify right side
    143,571.36x = 9,416,562,065.20
  5. Step 5: Solve for x
    x = 9,416,562,065.20/143,571.36
  6. Step 6: Final answer
    x = 65,588.03

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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.