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Finding the Fourth Proportional to 406,547.44, 609,918.05 and 140,310.26

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Solution

The fourth proportional to 406,547.44, 609,918.05 and 140,310.26 is: 210,498.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,547.44 : 609,918.05 = 140,310.26 : x
  2. Step 2: Convert to fraction form
    406,547.44/609,918.05 = 140,310.26/x
  3. Step 3: Cross multiply
    406,547.44x = 609,918.05 × 140,310.26
  4. Step 4: Simplify right side
    406,547.44x = 85,577,760,174.19
  5. Step 5: Solve for x
    x = 85,577,760,174.19/406,547.44
  6. Step 6: Final answer
    x = 210,498.83

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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.