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Finding the Fourth Proportional to 423,149.15, 583,792.56 and 278,033.00

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Solution

The fourth proportional to 423,149.15, 583,792.56 and 278,033.00 is: 383,584.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,149.15 : 583,792.56 = 278,033.00 : x
  2. Step 2: Convert to fraction form
    423,149.15/583,792.56 = 278,033.00/x
  3. Step 3: Cross multiply
    423,149.15x = 583,792.56 × 278,033.00
  4. Step 4: Simplify right side
    423,149.15x = 162,313,593,915.52
  5. Step 5: Solve for x
    x = 162,313,593,915.52/423,149.15
  6. Step 6: Final answer
    x = 383,584.83

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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.