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Finding the Fourth Proportional to 56,668.50, 84,991.80 and 21,599.96

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Solution

The fourth proportional to 56,668.50, 84,991.80 and 21,599.96 is: 32,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,668.50 : 84,991.80 = 21,599.96 : x
  2. Step 2: Convert to fraction form
    56,668.50/84,991.80 = 21,599.96/x
  3. Step 3: Cross multiply
    56,668.50x = 84,991.80 × 21,599.96
  4. Step 4: Simplify right side
    56,668.50x = 1,835,819,055.37
  5. Step 5: Solve for x
    x = 1,835,819,055.37/56,668.50
  6. Step 6: Final answer
    x = 32,395.76

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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.