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Finding the Fourth Proportional to 49,912.95, 68,885.92 and 28,407.93

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Solution

The fourth proportional to 49,912.95, 68,885.92 and 28,407.93 is: 39,206.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,912.95 : 68,885.92 = 28,407.93 : x
  2. Step 2: Convert to fraction form
    49,912.95/68,885.92 = 28,407.93/x
  3. Step 3: Cross multiply
    49,912.95x = 68,885.92 × 28,407.93
  4. Step 4: Simplify right side
    49,912.95x = 1,956,906,478.12
  5. Step 5: Solve for x
    x = 1,956,906,478.12/49,912.95
  6. Step 6: Final answer
    x = 39,206.39

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1.5x scale

Why These Related Problems?

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