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Finding the Fourth Proportional to 467,059.75, 643,184.88 and 405,777.58

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Solution

The fourth proportional to 467,059.75, 643,184.88 and 405,777.58 is: 558,793.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,059.75 : 643,184.88 = 405,777.58 : x
  2. Step 2: Convert to fraction form
    467,059.75/643,184.88 = 405,777.58/x
  3. Step 3: Cross multiply
    467,059.75x = 643,184.88 × 405,777.58
  4. Step 4: Simplify right side
    467,059.75x = 260,990,004,098.99
  5. Step 5: Solve for x
    x = 260,990,004,098.99/467,059.75
  6. Step 6: Final answer
    x = 558,793.61

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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.