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Finding the Fourth Proportional to 57,191.34, 78,928.52 and 36,791.63

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Solution

The fourth proportional to 57,191.34, 78,928.52 and 36,791.63 is: 50,775.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,191.34 : 78,928.52 = 36,791.63 : x
  2. Step 2: Convert to fraction form
    57,191.34/78,928.52 = 36,791.63/x
  3. Step 3: Cross multiply
    57,191.34x = 78,928.52 × 36,791.63
  4. Step 4: Simplify right side
    57,191.34x = 2,903,908,904.29
  5. Step 5: Solve for x
    x = 2,903,908,904.29/57,191.34
  6. Step 6: Final answer
    x = 50,775.33

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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.