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Finding the Fourth Proportional to 618,546.15, 926,244.15 and 407,544.39

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Solution

The fourth proportional to 618,546.15, 926,244.15 and 407,544.39 is: 610,278.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,546.15 : 926,244.15 = 407,544.39 : x
  2. Step 2: Convert to fraction form
    618,546.15/926,244.15 = 407,544.39/x
  3. Step 3: Cross multiply
    618,546.15x = 926,244.15 × 407,544.39
  4. Step 4: Simplify right side
    618,546.15x = 377,485,607,102.82
  5. Step 5: Solve for x
    x = 377,485,607,102.82/618,546.15
  6. Step 6: Final answer
    x = 610,278.81

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1.5x scale

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.