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Finding the Fourth Proportional to 32,350.80, 48,505.20 and 12,631.40

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Solution

The fourth proportional to 32,350.80, 48,505.20 and 12,631.40 is: 18,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,350.80 : 48,505.20 = 12,631.40 : x
  2. Step 2: Convert to fraction form
    32,350.80/48,505.20 = 12,631.40/x
  3. Step 3: Cross multiply
    32,350.80x = 48,505.20 × 12,631.40
  4. Step 4: Simplify right side
    32,350.80x = 612,688,583.28
  5. Step 5: Solve for x
    x = 612,688,583.28/32,350.80
  6. Step 6: Final answer
    x = 18,938.90

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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.