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Finding the Fourth Proportional to 52,971.68, 79,440.64 and 17,424.88

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Solution

The fourth proportional to 52,971.68, 79,440.64 and 17,424.88 is: 26,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,971.68 : 79,440.64 = 17,424.88 : x
  2. Step 2: Convert to fraction form
    52,971.68/79,440.64 = 17,424.88/x
  3. Step 3: Cross multiply
    52,971.68x = 79,440.64 × 17,424.88
  4. Step 4: Simplify right side
    52,971.68x = 1,384,243,376.96
  5. Step 5: Solve for x
    x = 1,384,243,376.96/52,971.68
  6. Step 6: Final answer
    x = 26,131.76

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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.