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Finding the Fourth Proportional to 395,706.78, 593,633.07 and 129,482.19

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Solution

The fourth proportional to 395,706.78, 593,633.07 and 129,482.19 is: 194,247.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,706.78 : 593,633.07 = 129,482.19 : x
  2. Step 2: Convert to fraction form
    395,706.78/593,633.07 = 129,482.19/x
  3. Step 3: Cross multiply
    395,706.78x = 593,633.07 × 129,482.19
  4. Step 4: Simplify right side
    395,706.78x = 76,864,909,960.02
  5. Step 5: Solve for x
    x = 76,864,909,960.02/395,706.78
  6. Step 6: Final answer
    x = 194,247.14

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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.