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Finding the Fourth Proportional to 356,716.26, 535,129.65 and 120,040.47

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Solution

The fourth proportional to 356,716.26, 535,129.65 and 120,040.47 is: 180,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,716.26 : 535,129.65 = 120,040.47 : x
  2. Step 2: Convert to fraction form
    356,716.26/535,129.65 = 120,040.47/x
  3. Step 3: Cross multiply
    356,716.26x = 535,129.65 × 120,040.47
  4. Step 4: Simplify right side
    356,716.26x = 64,237,214,696.94
  5. Step 5: Solve for x
    x = 64,237,214,696.94/356,716.26
  6. Step 6: Final answer
    x = 180,079.30

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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.