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Finding the Fourth Proportional to 202,783.15, 279,835.45 and 112,136.59

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Solution

The fourth proportional to 202,783.15, 279,835.45 and 112,136.59 is: 154,745.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,783.15 : 279,835.45 = 112,136.59 : x
  2. Step 2: Convert to fraction form
    202,783.15/279,835.45 = 112,136.59/x
  3. Step 3: Cross multiply
    202,783.15x = 279,835.45 × 112,136.59
  4. Step 4: Simplify right side
    202,783.15x = 31,379,793,124.12
  5. Step 5: Solve for x
    x = 31,379,793,124.12/202,783.15
  6. Step 6: Final answer
    x = 154,745.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.