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Finding the Fourth Proportional to 32,612.55, 48,918.30 and 12,891.29

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Solution

The fourth proportional to 32,612.55, 48,918.30 and 12,891.29 is: 19,336.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,612.55 : 48,918.30 = 12,891.29 : x
  2. Step 2: Convert to fraction form
    32,612.55/48,918.30 = 12,891.29/x
  3. Step 3: Cross multiply
    32,612.55x = 48,918.30 × 12,891.29
  4. Step 4: Simplify right side
    32,612.55x = 630,619,747.02
  5. Step 5: Solve for x
    x = 630,619,747.02/32,612.55
  6. Step 6: Final answer
    x = 19,336.72

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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.