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Finding the Fourth Proportional to 117,745.40, 162,431.50 and 69,964.92

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Solution

The fourth proportional to 117,745.40, 162,431.50 and 69,964.92 is: 96,517.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,745.40 : 162,431.50 = 69,964.92 : x
  2. Step 2: Convert to fraction form
    117,745.40/162,431.50 = 69,964.92/x
  3. Step 3: Cross multiply
    117,745.40x = 162,431.50 × 69,964.92
  4. Step 4: Simplify right side
    117,745.40x = 11,364,506,902.98
  5. Step 5: Solve for x
    x = 11,364,506,902.98/117,745.40
  6. Step 6: Final answer
    x = 96,517.63

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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.