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Finding the Fourth Proportional to 323,959.80, 485,939.70 and 183,991.80

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Solution

The fourth proportional to 323,959.80, 485,939.70 and 183,991.80 is: 275,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,959.80 : 485,939.70 = 183,991.80 : x
  2. Step 2: Convert to fraction form
    323,959.80/485,939.70 = 183,991.80/x
  3. Step 3: Cross multiply
    323,959.80x = 485,939.70 × 183,991.80
  4. Step 4: Simplify right side
    323,959.80x = 89,408,920,094.46
  5. Step 5: Solve for x
    x = 89,408,920,094.46/323,959.80
  6. Step 6: Final answer
    x = 275,987.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.