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Finding the Fourth Proportional to 79,013.48, 118,566.99 and 29,128.59

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Solution

The fourth proportional to 79,013.48, 118,566.99 and 29,128.59 is: 43,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,013.48 : 118,566.99 = 29,128.59 : x
  2. Step 2: Convert to fraction form
    79,013.48/118,566.99 = 29,128.59/x
  3. Step 3: Cross multiply
    79,013.48x = 118,566.99 × 29,128.59
  4. Step 4: Simplify right side
    79,013.48x = 3,453,689,239.24
  5. Step 5: Solve for x
    x = 3,453,689,239.24/79,013.48
  6. Step 6: Final answer
    x = 43,710.13

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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.