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Finding the Fourth Proportional to 223,937.61, 336,013.96 and 139,676.14

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Solution

The fourth proportional to 223,937.61, 336,013.96 and 139,676.14 is: 209,581.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,937.61 : 336,013.96 = 139,676.14 : x
  2. Step 2: Convert to fraction form
    223,937.61/336,013.96 = 139,676.14/x
  3. Step 3: Cross multiply
    223,937.61x = 336,013.96 × 139,676.14
  4. Step 4: Simplify right side
    223,937.61x = 46,933,132,918.91
  5. Step 5: Solve for x
    x = 46,933,132,918.91/223,937.61
  6. Step 6: Final answer
    x = 209,581.29

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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.