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Finding the Fourth Proportional to 49,790.94, 74,510.90 and 31,079.76

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Solution

The fourth proportional to 49,790.94, 74,510.90 and 31,079.76 is: 46,510.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,790.94 : 74,510.90 = 31,079.76 : x
  2. Step 2: Convert to fraction form
    49,790.94/74,510.90 = 31,079.76/x
  3. Step 3: Cross multiply
    49,790.94x = 74,510.90 × 31,079.76
  4. Step 4: Simplify right side
    49,790.94x = 2,315,780,889.38
  5. Step 5: Solve for x
    x = 2,315,780,889.38/49,790.94
  6. Step 6: Final answer
    x = 46,510.09

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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.