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Finding the Fourth Proportional to 406,926.20, 610,389.30 and 185,742.20

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Solution

The fourth proportional to 406,926.20, 610,389.30 and 185,742.20 is: 278,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,926.20 : 610,389.30 = 185,742.20 : x
  2. Step 2: Convert to fraction form
    406,926.20/610,389.30 = 185,742.20/x
  3. Step 3: Cross multiply
    406,926.20x = 610,389.30 × 185,742.20
  4. Step 4: Simplify right side
    406,926.20x = 113,375,051,438.46
  5. Step 5: Solve for x
    x = 113,375,051,438.46/406,926.20
  6. Step 6: Final answer
    x = 278,613.30

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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.