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Finding the Fourth Proportional to 118,469.70, 163,487.94 and 67,482.41

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Solution

The fourth proportional to 118,469.70, 163,487.94 and 67,482.41 is: 93,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,469.70 : 163,487.94 = 67,482.41 : x
  2. Step 2: Convert to fraction form
    118,469.70/163,487.94 = 67,482.41/x
  3. Step 3: Cross multiply
    118,469.70x = 163,487.94 × 67,482.41
  4. Step 4: Simplify right side
    118,469.70x = 11,032,559,379.70
  5. Step 5: Solve for x
    x = 11,032,559,379.70/118,469.70
  6. Step 6: Final answer
    x = 93,125.58

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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.