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Finding the Fourth Proportional to 52,807.82, 79,211.76 and 21,664.94

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Solution

The fourth proportional to 52,807.82, 79,211.76 and 21,664.94 is: 32,497.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,807.82 : 79,211.76 = 21,664.94 : x
  2. Step 2: Convert to fraction form
    52,807.82/79,211.76 = 21,664.94/x
  3. Step 3: Cross multiply
    52,807.82x = 79,211.76 × 21,664.94
  4. Step 4: Simplify right side
    52,807.82x = 1,716,118,027.69
  5. Step 5: Solve for x
    x = 1,716,118,027.69/52,807.82
  6. Step 6: Final answer
    x = 32,497.42

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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.