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Finding the Fourth Proportional to 32,617.79, 48,911.26 and 12,636.64

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Solution

The fourth proportional to 32,617.79, 48,911.26 and 12,636.64 is: 18,948.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,617.79 : 48,911.26 = 12,636.64 : x
  2. Step 2: Convert to fraction form
    32,617.79/48,911.26 = 12,636.64/x
  3. Step 3: Cross multiply
    32,617.79x = 48,911.26 × 12,636.64
  4. Step 4: Simplify right side
    32,617.79x = 618,073,984.57
  5. Step 5: Solve for x
    x = 618,073,984.57/32,617.79
  6. Step 6: Final answer
    x = 18,948.98

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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.