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Finding the Fourth Proportional to 79,805.19, 110,128.33 and 43,505.89

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Solution

The fourth proportional to 79,805.19, 110,128.33 and 43,505.89 is: 60,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,805.19 : 110,128.33 = 43,505.89 : x
  2. Step 2: Convert to fraction form
    79,805.19/110,128.33 = 43,505.89/x
  3. Step 3: Cross multiply
    79,805.19x = 110,128.33 × 43,505.89
  4. Step 4: Simplify right side
    79,805.19x = 4,791,230,748.29
  5. Step 5: Solve for x
    x = 4,791,230,748.29/79,805.19
  6. Step 6: Final answer
    x = 60,036.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.