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Finding the Fourth Proportional to 867,917.36, 1,197,771 and 485,921.36

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Solution

The fourth proportional to 867,917.36, 1,197,771 and 485,921.36 is: 670,596.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,917.36 : 1,197,771 = 485,921.36 : x
  2. Step 2: Convert to fraction form
    867,917.36/1,197,771 = 485,921.36/x
  3. Step 3: Cross multiply
    867,917.36x = 1,197,771 × 485,921.36
  4. Step 4: Simplify right side
    867,917.36x = 582,022,513,288.56
  5. Step 5: Solve for x
    x = 582,022,513,288.56/867,917.36
  6. Step 6: Final answer
    x = 670,596.70

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1.5x scale

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.