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Finding the Fourth Proportional to 203,059.40, 304,329.90 and 156,079.40

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Solution

The fourth proportional to 203,059.40, 304,329.90 and 156,079.40 is: 233,919.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,059.40 : 304,329.90 = 156,079.40 : x
  2. Step 2: Convert to fraction form
    203,059.40/304,329.90 = 156,079.40/x
  3. Step 3: Cross multiply
    203,059.40x = 304,329.90 × 156,079.40
  4. Step 4: Simplify right side
    203,059.40x = 47,499,628,194.06
  5. Step 5: Solve for x
    x = 47,499,628,194.06/203,059.40
  6. Step 6: Final answer
    x = 233,919.87

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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.