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Finding the Fourth Proportional to 519,858.96, 780,087.96 and 220,315.92

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Solution

The fourth proportional to 519,858.96, 780,087.96 and 220,315.92 is: 330,600.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,858.96 : 780,087.96 = 220,315.92 : x
  2. Step 2: Convert to fraction form
    519,858.96/780,087.96 = 220,315.92/x
  3. Step 3: Cross multiply
    519,858.96x = 780,087.96 × 220,315.92
  4. Step 4: Simplify right side
    519,858.96x = 171,865,796,588.32
  5. Step 5: Solve for x
    x = 171,865,796,588.32/519,858.96
  6. Step 6: Final answer
    x = 330,600.82

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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.