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Finding the Fourth Proportional to 52,940.84, 79,405.14 and 19,661.58

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Solution

The fourth proportional to 52,940.84, 79,405.14 and 19,661.58 is: 29,490.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,940.84 : 79,405.14 = 19,661.58 : x
  2. Step 2: Convert to fraction form
    52,940.84/79,405.14 = 19,661.58/x
  3. Step 3: Cross multiply
    52,940.84x = 79,405.14 × 19,661.58
  4. Step 4: Simplify right side
    52,940.84x = 1,561,230,586.25
  5. Step 5: Solve for x
    x = 1,561,230,586.25/52,940.84
  6. Step 6: Final answer
    x = 29,490.10

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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.