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Finding the Fourth Proportional to 74,048.33, 102,080.41 and 52,790.69

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Solution

The fourth proportional to 74,048.33, 102,080.41 and 52,790.69 is: 72,775.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,048.33 : 102,080.41 = 52,790.69 : x
  2. Step 2: Convert to fraction form
    74,048.33/102,080.41 = 52,790.69/x
  3. Step 3: Cross multiply
    74,048.33x = 102,080.41 × 52,790.69
  4. Step 4: Simplify right side
    74,048.33x = 5,388,895,402.61
  5. Step 5: Solve for x
    x = 5,388,895,402.61/74,048.33
  6. Step 6: Final answer
    x = 72,775.38

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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.