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Finding the Fourth Proportional to 58,468.30, 87,689.86 and 18,490.41

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Solution

The fourth proportional to 58,468.30, 87,689.86 and 18,490.41 is: 27,731.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,468.30 : 87,689.86 = 18,490.41 : x
  2. Step 2: Convert to fraction form
    58,468.30/87,689.86 = 18,490.41/x
  3. Step 3: Cross multiply
    58,468.30x = 87,689.86 × 18,490.41
  4. Step 4: Simplify right side
    58,468.30x = 1,621,421,418.02
  5. Step 5: Solve for x
    x = 1,621,421,418.02/58,468.30
  6. Step 6: Final answer
    x = 27,731.63

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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.