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Finding the Fourth Proportional to 58,382.88, 87,574.30 and 18,939.99

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Solution

The fourth proportional to 58,382.88, 87,574.30 and 18,939.99 is: 28,409.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,382.88 : 87,574.30 = 18,939.99 : x
  2. Step 2: Convert to fraction form
    58,382.88/87,574.30 = 18,939.99/x
  3. Step 3: Cross multiply
    58,382.88x = 87,574.30 × 18,939.99
  4. Step 4: Simplify right side
    58,382.88x = 1,658,656,647.31
  5. Step 5: Solve for x
    x = 1,658,656,647.31/58,382.88
  6. Step 6: Final answer
    x = 28,409.99

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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.