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Finding the Fourth Proportional to 356,649.26, 535,043.86 and 132,011.60

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Solution

The fourth proportional to 356,649.26, 535,043.86 and 132,011.60 is: 198,043.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,649.26 : 535,043.86 = 132,011.60 : x
  2. Step 2: Convert to fraction form
    356,649.26/535,043.86 = 132,011.60/x
  3. Step 3: Cross multiply
    356,649.26x = 535,043.86 × 132,011.60
  4. Step 4: Simplify right side
    356,649.26x = 70,631,996,028.78
  5. Step 5: Solve for x
    x = 70,631,996,028.78/356,649.26
  6. Step 6: Final answer
    x = 198,043.30

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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.