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Finding the Fourth Proportional to 99,359.64, 148,992.63 and 36,135.30

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Solution

The fourth proportional to 99,359.64, 148,992.63 and 36,135.30 is: 54,185.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,359.64 : 148,992.63 = 36,135.30 : x
  2. Step 2: Convert to fraction form
    99,359.64/148,992.63 = 36,135.30/x
  3. Step 3: Cross multiply
    99,359.64x = 148,992.63 × 36,135.30
  4. Step 4: Simplify right side
    99,359.64x = 5,383,893,382.84
  5. Step 5: Solve for x
    x = 5,383,893,382.84/99,359.64
  6. Step 6: Final answer
    x = 54,185.92

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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.