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Finding the Fourth Proportional to 525,179.82, 787,769.76 and 419,503.98

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Solution

The fourth proportional to 525,179.82, 787,769.76 and 419,503.98 is: 629,255.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,179.82 : 787,769.76 = 419,503.98 : x
  2. Step 2: Convert to fraction form
    525,179.82/787,769.76 = 419,503.98/x
  3. Step 3: Cross multiply
    525,179.82x = 787,769.76 × 419,503.98
  4. Step 4: Simplify right side
    525,179.82x = 330,472,549,643.65
  5. Step 5: Solve for x
    x = 330,472,549,643.65/525,179.82
  6. Step 6: Final answer
    x = 629,255.99

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.