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Finding the Fourth Proportional to 136,960.56, 189,000.14 and 79,597.18

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Solution

The fourth proportional to 136,960.56, 189,000.14 and 79,597.18 is: 109,840.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,960.56 : 189,000.14 = 79,597.18 : x
  2. Step 2: Convert to fraction form
    136,960.56/189,000.14 = 79,597.18/x
  3. Step 3: Cross multiply
    136,960.56x = 189,000.14 × 79,597.18
  4. Step 4: Simplify right side
    136,960.56x = 15,043,878,163.61
  5. Step 5: Solve for x
    x = 15,043,878,163.61/136,960.56
  6. Step 6: Final answer
    x = 109,840.95

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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.