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Finding the Fourth Proportional to 395,999.70, 593,780.85 and 129,623.10

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Solution

The fourth proportional to 395,999.70, 593,780.85 and 129,623.10 is: 194,363.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,999.70 : 593,780.85 = 129,623.10 : x
  2. Step 2: Convert to fraction form
    395,999.70/593,780.85 = 129,623.10/x
  3. Step 3: Cross multiply
    395,999.70x = 593,780.85 × 129,623.10
  4. Step 4: Simplify right side
    395,999.70x = 76,967,714,497.64
  5. Step 5: Solve for x
    x = 76,967,714,497.64/395,999.70
  6. Step 6: Final answer
    x = 194,363.06

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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.