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Finding the Fourth Proportional to 96,978.88, 133,834.08 and 54,545.60

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Solution

The fourth proportional to 96,978.88, 133,834.08 and 54,545.60 is: 75,274.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,978.88 : 133,834.08 = 54,545.60 : x
  2. Step 2: Convert to fraction form
    96,978.88/133,834.08 = 54,545.60/x
  3. Step 3: Cross multiply
    96,978.88x = 133,834.08 × 54,545.60
  4. Step 4: Simplify right side
    96,978.88x = 7,300,060,194.05
  5. Step 5: Solve for x
    x = 7,300,060,194.05/96,978.88
  6. Step 6: Final answer
    x = 75,274.74

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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.