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Finding the Fourth Proportional to 93,804.56, 140,721.43 and 31,489.64

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Solution

The fourth proportional to 93,804.56, 140,721.43 and 31,489.64 is: 47,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,804.56 : 140,721.43 = 31,489.64 : x
  2. Step 2: Convert to fraction form
    93,804.56/140,721.43 = 31,489.64/x
  3. Step 3: Cross multiply
    93,804.56x = 140,721.43 × 31,489.64
  4. Step 4: Simplify right side
    93,804.56x = 4,431,267,444.06
  5. Step 5: Solve for x
    x = 4,431,267,444.06/93,804.56
  6. Step 6: Final answer
    x = 47,239.36

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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.