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Finding the Fourth Proportional to 619,994.53, 855,685.83 and 378,417.48

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Solution

The fourth proportional to 619,994.53, 855,685.83 and 378,417.48 is: 522,273.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,994.53 : 855,685.83 = 378,417.48 : x
  2. Step 2: Convert to fraction form
    619,994.53/855,685.83 = 378,417.48/x
  3. Step 3: Cross multiply
    619,994.53x = 855,685.83 × 378,417.48
  4. Step 4: Simplify right side
    619,994.53x = 323,806,473,568.22
  5. Step 5: Solve for x
    x = 323,806,473,568.22/619,994.53
  6. Step 6: Final answer
    x = 522,273.12

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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.