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Finding the Fourth Proportional to 695,839.92, 960,230.64 and 405,479.20

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Solution

The fourth proportional to 695,839.92, 960,230.64 and 405,479.20 is: 559,544.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,839.92 : 960,230.64 = 405,479.20 : x
  2. Step 2: Convert to fraction form
    695,839.92/960,230.64 = 405,479.20/x
  3. Step 3: Cross multiply
    695,839.92x = 960,230.64 × 405,479.20
  4. Step 4: Simplify right side
    695,839.92x = 389,353,551,722.69
  5. Step 5: Solve for x
    x = 389,353,551,722.69/695,839.92
  6. Step 6: Final answer
    x = 559,544.72

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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.