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Finding the Fourth Proportional to 118,491.31, 163,533.36 and 67,522.47

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Solution

The fourth proportional to 118,491.31, 163,533.36 and 67,522.47 is: 93,189.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,491.31 : 163,533.36 = 67,522.47 : x
  2. Step 2: Convert to fraction form
    118,491.31/163,533.36 = 67,522.47/x
  3. Step 3: Cross multiply
    118,491.31x = 163,533.36 × 67,522.47
  4. Step 4: Simplify right side
    118,491.31x = 11,042,176,394.60
  5. Step 5: Solve for x
    x = 11,042,176,394.60/118,491.31
  6. Step 6: Final answer
    x = 93,189.76

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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.