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Finding the Fourth Proportional to 235,071.92, 352,747.92 and 85,323.86

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Solution

The fourth proportional to 235,071.92, 352,747.92 and 85,323.86 is: 128,036.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,071.92 : 352,747.92 = 85,323.86 : x
  2. Step 2: Convert to fraction form
    235,071.92/352,747.92 = 85,323.86/x
  3. Step 3: Cross multiply
    235,071.92x = 352,747.92 × 85,323.86
  4. Step 4: Simplify right side
    235,071.92x = 30,097,814,141.37
  5. Step 5: Solve for x
    x = 30,097,814,141.37/235,071.92
  6. Step 6: Final answer
    x = 128,036.62

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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.