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Finding the Fourth Proportional to 618,079.32, 927,593.64 and 276,628.68

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Solution

The fourth proportional to 618,079.32, 927,593.64 and 276,628.68 is: 415,155.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,079.32 : 927,593.64 = 276,628.68 : x
  2. Step 2: Convert to fraction form
    618,079.32/927,593.64 = 276,628.68/x
  3. Step 3: Cross multiply
    618,079.32x = 927,593.64 × 276,628.68
  4. Step 4: Simplify right side
    618,079.32x = 256,599,004,209.60
  5. Step 5: Solve for x
    x = 256,599,004,209.60/618,079.32
  6. Step 6: Final answer
    x = 415,155.46

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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.