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Finding the Fourth Proportional to 128,932.43, 193,354.85 and 44,672.93

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Solution

The fourth proportional to 128,932.43, 193,354.85 and 44,672.93 is: 66,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,932.43 : 193,354.85 = 44,672.93 : x
  2. Step 2: Convert to fraction form
    128,932.43/193,354.85 = 44,672.93/x
  3. Step 3: Cross multiply
    128,932.43x = 193,354.85 × 44,672.93
  4. Step 4: Simplify right side
    128,932.43x = 8,637,726,489.07
  5. Step 5: Solve for x
    x = 8,637,726,489.07/128,932.43
  6. Step 6: Final answer
    x = 66,994.21

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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.