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Finding the Fourth Proportional to 132,537.62, 198,731.13 and 90,468.63

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Solution

The fourth proportional to 132,537.62, 198,731.13 and 90,468.63 is: 135,651.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,537.62 : 198,731.13 = 90,468.63 : x
  2. Step 2: Convert to fraction form
    132,537.62/198,731.13 = 90,468.63/x
  3. Step 3: Cross multiply
    132,537.62x = 198,731.13 × 90,468.63
  4. Step 4: Simplify right side
    132,537.62x = 17,978,931,623.45
  5. Step 5: Solve for x
    x = 17,978,931,623.45/132,537.62
  6. Step 6: Final answer
    x = 135,651.53

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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.