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Finding the Fourth Proportional to 52,891.63, 79,328.91 and 15,442.90

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Solution

The fourth proportional to 52,891.63, 79,328.91 and 15,442.90 is: 23,161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,891.63 : 79,328.91 = 15,442.90 : x
  2. Step 2: Convert to fraction form
    52,891.63/79,328.91 = 15,442.90/x
  3. Step 3: Cross multiply
    52,891.63x = 79,328.91 × 15,442.90
  4. Step 4: Simplify right side
    52,891.63x = 1,225,068,424.24
  5. Step 5: Solve for x
    x = 1,225,068,424.24/52,891.63
  6. Step 6: Final answer
    x = 23,161.86

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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.