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Finding the Fourth Proportional to 118,074.56, 162,941.28 and 67,772.48

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Solution

The fourth proportional to 118,074.56, 162,941.28 and 67,772.48 is: 93,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,074.56 : 162,941.28 = 67,772.48 : x
  2. Step 2: Convert to fraction form
    118,074.56/162,941.28 = 67,772.48/x
  3. Step 3: Cross multiply
    118,074.56x = 162,941.28 × 67,772.48
  4. Step 4: Simplify right side
    118,074.56x = 11,042,934,639.97
  5. Step 5: Solve for x
    x = 11,042,934,639.97/118,074.56
  6. Step 6: Final answer
    x = 93,525.10

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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.