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Finding the Fourth Proportional to 93,355.63, 128,842.36 and 57,049.61

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Solution

The fourth proportional to 93,355.63, 128,842.36 and 57,049.61 is: 78,735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,355.63 : 128,842.36 = 57,049.61 : x
  2. Step 2: Convert to fraction form
    93,355.63/128,842.36 = 57,049.61/x
  3. Step 3: Cross multiply
    93,355.63x = 128,842.36 × 57,049.61
  4. Step 4: Simplify right side
    93,355.63x = 7,350,405,602.64
  5. Step 5: Solve for x
    x = 7,350,405,602.64/93,355.63
  6. Step 6: Final answer
    x = 78,735.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.