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Finding the Fourth Proportional to 118,753.86, 178,133.02 and 55,539.03

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Solution

The fourth proportional to 118,753.86, 178,133.02 and 55,539.03 is: 83,309.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,753.86 : 178,133.02 = 55,539.03 : x
  2. Step 2: Convert to fraction form
    118,753.86/178,133.02 = 55,539.03/x
  3. Step 3: Cross multiply
    118,753.86x = 178,133.02 × 55,539.03
  4. Step 4: Simplify right side
    118,753.86x = 9,893,335,002.92
  5. Step 5: Solve for x
    x = 9,893,335,002.92/118,753.86
  6. Step 6: Final answer
    x = 83,309.59

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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.