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Finding the Fourth Proportional to 505,015.30, 696,920.76 and 323,727.18

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Solution

The fourth proportional to 505,015.30, 696,920.76 and 323,727.18 is: 446,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,015.30 : 696,920.76 = 323,727.18 : x
  2. Step 2: Convert to fraction form
    505,015.30/696,920.76 = 323,727.18/x
  3. Step 3: Cross multiply
    505,015.30x = 696,920.76 × 323,727.18
  4. Step 4: Simplify right side
    505,015.30x = 225,612,192,318.26
  5. Step 5: Solve for x
    x = 225,612,192,318.26/505,015.30
  6. Step 6: Final answer
    x = 446,743.28

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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.