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Finding the Fourth Proportional to 52,958.64, 79,417.92 and 21,357.96

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Solution

The fourth proportional to 52,958.64, 79,417.92 and 21,357.96 is: 32,028.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,958.64 : 79,417.92 = 21,357.96 : x
  2. Step 2: Convert to fraction form
    52,958.64/79,417.92 = 21,357.96/x
  3. Step 3: Cross multiply
    52,958.64x = 79,417.92 × 21,357.96
  4. Step 4: Simplify right side
    52,958.64x = 1,696,204,758.64
  5. Step 5: Solve for x
    x = 1,696,204,758.64/52,958.64
  6. Step 6: Final answer
    x = 32,028.86

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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.