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Finding the Fourth Proportional to 711,350.52, 981,649.89 and 389,059.62

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Solution

The fourth proportional to 711,350.52, 981,649.89 and 389,059.62 is: 536,894.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,350.52 : 981,649.89 = 389,059.62 : x
  2. Step 2: Convert to fraction form
    711,350.52/981,649.89 = 389,059.62/x
  3. Step 3: Cross multiply
    711,350.52x = 981,649.89 × 389,059.62
  4. Step 4: Simplify right side
    711,350.52x = 381,920,333,176.44
  5. Step 5: Solve for x
    x = 381,920,333,176.44/711,350.52
  6. Step 6: Final answer
    x = 536,894.71

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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.