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Finding the Fourth Proportional to 362,909.54, 500,843.19 and 217,720.77

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Solution

The fourth proportional to 362,909.54, 500,843.19 and 217,720.77 is: 300,471.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,909.54 : 500,843.19 = 217,720.77 : x
  2. Step 2: Convert to fraction form
    362,909.54/500,843.19 = 217,720.77/x
  3. Step 3: Cross multiply
    362,909.54x = 500,843.19 × 217,720.77
  4. Step 4: Simplify right side
    362,909.54x = 109,043,963,887.45
  5. Step 5: Solve for x
    x = 109,043,963,887.45/362,909.54
  6. Step 6: Final answer
    x = 300,471.48

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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.