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Finding the Fourth Proportional to 118,157.56, 163,050.95 and 67,163.20

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Solution

The fourth proportional to 118,157.56, 163,050.95 and 67,163.20 is: 92,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,157.56 : 163,050.95 = 67,163.20 : x
  2. Step 2: Convert to fraction form
    118,157.56/163,050.95 = 67,163.20/x
  3. Step 3: Cross multiply
    118,157.56x = 163,050.95 × 67,163.20
  4. Step 4: Simplify right side
    118,157.56x = 10,951,023,565.04
  5. Step 5: Solve for x
    x = 10,951,023,565.04/118,157.56
  6. Step 6: Final answer
    x = 92,681.53

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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.