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Finding the Fourth Proportional to 461,057.58, 636,262.25 and 257,121.41

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Solution

The fourth proportional to 461,057.58, 636,262.25 and 257,121.41 is: 354,829.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,057.58 : 636,262.25 = 257,121.41 : x
  2. Step 2: Convert to fraction form
    461,057.58/636,262.25 = 257,121.41/x
  3. Step 3: Cross multiply
    461,057.58x = 636,262.25 × 257,121.41
  4. Step 4: Simplify right side
    461,057.58x = 163,596,642,382.85
  5. Step 5: Solve for x
    x = 163,596,642,382.85/461,057.58
  6. Step 6: Final answer
    x = 354,829.09

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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.