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Finding the Fourth Proportional to 678,057.06, 935,762.49 and 376,251.06

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Solution

The fourth proportional to 678,057.06, 935,762.49 and 376,251.06 is: 519,250.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,057.06 : 935,762.49 = 376,251.06 : x
  2. Step 2: Convert to fraction form
    678,057.06/935,762.49 = 376,251.06/x
  3. Step 3: Cross multiply
    678,057.06x = 935,762.49 × 376,251.06
  4. Step 4: Simplify right side
    678,057.06x = 352,081,628,770.74
  5. Step 5: Solve for x
    x = 352,081,628,770.74/678,057.06
  6. Step 6: Final answer
    x = 519,250.74

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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.