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Finding the Fourth Proportional to 621,512.04, 857,752.47 and 379,936.02

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Solution

The fourth proportional to 621,512.04, 857,752.47 and 379,936.02 is: 524,351.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,512.04 : 857,752.47 = 379,936.02 : x
  2. Step 2: Convert to fraction form
    621,512.04/857,752.47 = 379,936.02/x
  3. Step 3: Cross multiply
    621,512.04x = 857,752.47 × 379,936.02
  4. Step 4: Simplify right side
    621,512.04x = 325,891,059,596.97
  5. Step 5: Solve for x
    x = 325,891,059,596.97/621,512.04
  6. Step 6: Final answer
    x = 524,351.97

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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.