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Finding the Fourth Proportional to 79,146.40, 118,706.64 and 29,249.88

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Solution

The fourth proportional to 79,146.40, 118,706.64 and 29,249.88 is: 43,870.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,146.40 : 118,706.64 = 29,249.88 : x
  2. Step 2: Convert to fraction form
    79,146.40/118,706.64 = 29,249.88/x
  3. Step 3: Cross multiply
    79,146.40x = 118,706.64 × 29,249.88
  4. Step 4: Simplify right side
    79,146.40x = 3,472,154,975.20
  5. Step 5: Solve for x
    x = 3,472,154,975.20/79,146.40
  6. Step 6: Final answer
    x = 43,870.03

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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.