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Finding the Fourth Proportional to 388,581.71, 583,120.62 and 188,793.18

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Solution

The fourth proportional to 388,581.71, 583,120.62 and 188,793.18 is: 283,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,581.71 : 583,120.62 = 188,793.18 : x
  2. Step 2: Convert to fraction form
    388,581.71/583,120.62 = 188,793.18/x
  3. Step 3: Cross multiply
    388,581.71x = 583,120.62 × 188,793.18
  4. Step 4: Simplify right side
    388,581.71x = 110,089,196,173.37
  5. Step 5: Solve for x
    x = 110,089,196,173.37/388,581.71
  6. Step 6: Final answer
    x = 283,310.29

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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.