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Finding the Fourth Proportional to 395,514.66, 593,308.44 and 129,276.57

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Solution

The fourth proportional to 395,514.66, 593,308.44 and 129,276.57 is: 193,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,514.66 : 593,308.44 = 129,276.57 : x
  2. Step 2: Convert to fraction form
    395,514.66/593,308.44 = 129,276.57/x
  3. Step 3: Cross multiply
    395,514.66x = 593,308.44 × 129,276.57
  4. Step 4: Simplify right side
    395,514.66x = 76,700,880,075.25
  5. Step 5: Solve for x
    x = 76,700,880,075.25/395,514.66
  6. Step 6: Final answer
    x = 193,926.77

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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.