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Finding the Fourth Proportional to 91,166.40, 136,684.80 and 34,984.80

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Solution

The fourth proportional to 91,166.40, 136,684.80 and 34,984.80 is: 52,452.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,166.40 : 136,684.80 = 34,984.80 : x
  2. Step 2: Convert to fraction form
    91,166.40/136,684.80 = 34,984.80/x
  3. Step 3: Cross multiply
    91,166.40x = 136,684.80 × 34,984.80
  4. Step 4: Simplify right side
    91,166.40x = 4,781,890,391.04
  5. Step 5: Solve for x
    x = 4,781,890,391.04/91,166.40
  6. Step 6: Final answer
    x = 52,452.33

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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.