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Finding the Fourth Proportional to 129,768.40, 194,587.80 and 59,568.40

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Solution

The fourth proportional to 129,768.40, 194,587.80 and 59,568.40 is: 89,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,768.40 : 194,587.80 = 59,568.40 : x
  2. Step 2: Convert to fraction form
    129,768.40/194,587.80 = 59,568.40/x
  3. Step 3: Cross multiply
    129,768.40x = 194,587.80 × 59,568.40
  4. Step 4: Simplify right side
    129,768.40x = 11,591,283,905.52
  5. Step 5: Solve for x
    x = 11,591,283,905.52/129,768.40
  6. Step 6: Final answer
    x = 89,322.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.