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Finding the Fourth Proportional to 351,143.60, 526,942.20 and 193,485.20

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Solution

The fourth proportional to 351,143.60, 526,942.20 and 193,485.20 is: 290,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,143.60 : 526,942.20 = 193,485.20 : x
  2. Step 2: Convert to fraction form
    351,143.60/526,942.20 = 193,485.20/x
  3. Step 3: Cross multiply
    351,143.60x = 526,942.20 × 193,485.20
  4. Step 4: Simplify right side
    351,143.60x = 101,955,516,955.44
  5. Step 5: Solve for x
    x = 101,955,516,955.44/351,143.60
  6. Step 6: Final answer
    x = 290,352.77

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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.