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Finding the Fourth Proportional to 519,380.96, 711,548.60 and 499,958.60

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Solution

The fourth proportional to 519,380.96, 711,548.60 and 499,958.60 is: 684,940.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,380.96 : 711,548.60 = 499,958.60 : x
  2. Step 2: Convert to fraction form
    519,380.96/711,548.60 = 499,958.60/x
  3. Step 3: Cross multiply
    519,380.96x = 711,548.60 × 499,958.60
  4. Step 4: Simplify right side
    519,380.96x = 355,744,839,388.17
  5. Step 5: Solve for x
    x = 355,744,839,388.17/519,380.96
  6. Step 6: Final answer
    x = 684,940.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.