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Finding the Fourth Proportional to 404,528.32, 603,476.89 and 393,532.75

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Solution

The fourth proportional to 404,528.32, 603,476.89 and 393,532.75 is: 587,073.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,528.32 : 603,476.89 = 393,532.75 : x
  2. Step 2: Convert to fraction form
    404,528.32/603,476.89 = 393,532.75/x
  3. Step 3: Cross multiply
    404,528.32x = 603,476.89 × 393,532.75
  4. Step 4: Simplify right side
    404,528.32x = 237,487,922,740.68
  5. Step 5: Solve for x
    x = 237,487,922,740.68/404,528.32
  6. Step 6: Final answer
    x = 587,073.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.