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Finding the Fourth Proportional to 79,008.80, 118,225.20 and 58,272.80

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Solution

The fourth proportional to 79,008.80, 118,225.20 and 58,272.80 is: 87,196.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,008.80 : 118,225.20 = 58,272.80 : x
  2. Step 2: Convert to fraction form
    79,008.80/118,225.20 = 58,272.80/x
  3. Step 3: Cross multiply
    79,008.80x = 118,225.20 × 58,272.80
  4. Step 4: Simplify right side
    79,008.80x = 6,889,313,434.56
  5. Step 5: Solve for x
    x = 6,889,313,434.56/79,008.80
  6. Step 6: Final answer
    x = 87,196.79

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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.