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Finding the Fourth Proportional to 118,543.94, 177,815.69 and 55,342.88

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Solution

The fourth proportional to 118,543.94, 177,815.69 and 55,342.88 is: 83,014.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,543.94 : 177,815.69 = 55,342.88 : x
  2. Step 2: Convert to fraction form
    118,543.94/177,815.69 = 55,342.88/x
  3. Step 3: Cross multiply
    118,543.94x = 177,815.69 × 55,342.88
  4. Step 4: Simplify right side
    118,543.94x = 9,840,831,227.99
  5. Step 5: Solve for x
    x = 9,840,831,227.99/118,543.94
  6. Step 6: Final answer
    x = 83,014.21

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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.