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Finding the Fourth Proportional to 79,208.40, 118,834.62 and 64,380.60

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Solution

The fourth proportional to 79,208.40, 118,834.62 and 64,380.60 is: 96,588.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,208.40 : 118,834.62 = 64,380.60 : x
  2. Step 2: Convert to fraction form
    79,208.40/118,834.62 = 64,380.60/x
  3. Step 3: Cross multiply
    79,208.40x = 118,834.62 × 64,380.60
  4. Step 4: Simplify right side
    79,208.40x = 7,650,644,136.37
  5. Step 5: Solve for x
    x = 7,650,644,136.37/79,208.40
  6. Step 6: Final answer
    x = 96,588.80

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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.