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Finding the Fourth Proportional to 468,987.92, 647,205.59 and 254,128.38

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Solution

The fourth proportional to 468,987.92, 647,205.59 and 254,128.38 is: 350,698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,987.92 : 647,205.59 = 254,128.38 : x
  2. Step 2: Convert to fraction form
    468,987.92/647,205.59 = 254,128.38/x
  3. Step 3: Cross multiply
    468,987.92x = 647,205.59 × 254,128.38
  4. Step 4: Simplify right side
    468,987.92x = 164,473,306,843.00
  5. Step 5: Solve for x
    x = 164,473,306,843.00/468,987.92
  6. Step 6: Final answer
    x = 350,698.39

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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.