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Finding the Fourth Proportional to 613,756.80, 919,494.72 and 333,509.76

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Solution

The fourth proportional to 613,756.80, 919,494.72 and 333,509.76 is: 499,644.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,756.80 : 919,494.72 = 333,509.76 : x
  2. Step 2: Convert to fraction form
    613,756.80/919,494.72 = 333,509.76/x
  3. Step 3: Cross multiply
    613,756.80x = 919,494.72 × 333,509.76
  4. Step 4: Simplify right side
    613,756.80x = 306,660,463,388.47
  5. Step 5: Solve for x
    x = 306,660,463,388.47/613,756.80
  6. Step 6: Final answer
    x = 499,644.91

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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.