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Finding the Fourth Proportional to 91,809.40, 137,694.64 and 32,648.64

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Solution

The fourth proportional to 91,809.40, 137,694.64 and 32,648.64 is: 48,966.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,809.40 : 137,694.64 = 32,648.64 : x
  2. Step 2: Convert to fraction form
    91,809.40/137,694.64 = 32,648.64/x
  3. Step 3: Cross multiply
    91,809.40x = 137,694.64 × 32,648.64
  4. Step 4: Simplify right side
    91,809.40x = 4,495,542,731.29
  5. Step 5: Solve for x
    x = 4,495,542,731.29/91,809.40
  6. Step 6: Final answer
    x = 48,966.04

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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.