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Finding the Fourth Proportional to 129,801.40, 194,687.70 and 36,316.60

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Solution

The fourth proportional to 129,801.40, 194,687.70 and 36,316.60 is: 54,470.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,801.40 : 194,687.70 = 36,316.60 : x
  2. Step 2: Convert to fraction form
    129,801.40/194,687.70 = 36,316.60/x
  3. Step 3: Cross multiply
    129,801.40x = 194,687.70 × 36,316.60
  4. Step 4: Simplify right side
    129,801.40x = 7,070,395,325.82
  5. Step 5: Solve for x
    x = 7,070,395,325.82/129,801.40
  6. Step 6: Final answer
    x = 54,470.87

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1.5x scale

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.