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Finding the Fourth Proportional to 79,298.80, 118,942.02 and 29,355.40

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Solution

The fourth proportional to 79,298.80, 118,942.02 and 29,355.40 is: 44,030.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,298.80 : 118,942.02 = 29,355.40 : x
  2. Step 2: Convert to fraction form
    79,298.80/118,942.02 = 29,355.40/x
  3. Step 3: Cross multiply
    79,298.80x = 118,942.02 × 29,355.40
  4. Step 4: Simplify right side
    79,298.80x = 3,491,590,573.91
  5. Step 5: Solve for x
    x = 3,491,590,573.91/79,298.80
  6. Step 6: Final answer
    x = 44,030.81

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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.