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Finding the Fourth Proportional to 79,170.01, 118,740.15 and 39,716.53

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Solution

The fourth proportional to 79,170.01, 118,740.15 and 39,716.53 is: 59,567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,170.01 : 118,740.15 = 39,716.53 : x
  2. Step 2: Convert to fraction form
    79,170.01/118,740.15 = 39,716.53/x
  3. Step 3: Cross multiply
    79,170.01x = 118,740.15 × 39,716.53
  4. Step 4: Simplify right side
    79,170.01x = 4,715,946,729.68
  5. Step 5: Solve for x
    x = 4,715,946,729.68/79,170.01
  6. Step 6: Final answer
    x = 59,567.34

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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.