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Finding the Fourth Proportional to 70,791.31, 97,692.71 and 38,960.94

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Solution

The fourth proportional to 70,791.31, 97,692.71 and 38,960.94 is: 53,766.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,791.31 : 97,692.71 = 38,960.94 : x
  2. Step 2: Convert to fraction form
    70,791.31/97,692.71 = 38,960.94/x
  3. Step 3: Cross multiply
    70,791.31x = 97,692.71 × 38,960.94
  4. Step 4: Simplify right side
    70,791.31x = 3,806,199,984.29
  5. Step 5: Solve for x
    x = 3,806,199,984.29/70,791.31
  6. Step 6: Final answer
    x = 53,766.49

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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.