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Finding the Fourth Proportional to 425,617.78, 587,348.68 and 234,631.17

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Solution

The fourth proportional to 425,617.78, 587,348.68 and 234,631.17 is: 323,788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,617.78 : 587,348.68 = 234,631.17 : x
  2. Step 2: Convert to fraction form
    425,617.78/587,348.68 = 234,631.17/x
  3. Step 3: Cross multiply
    425,617.78x = 587,348.68 × 234,631.17
  4. Step 4: Simplify right side
    425,617.78x = 137,810,307,986.36
  5. Step 5: Solve for x
    x = 137,810,307,986.36/425,617.78
  6. Step 6: Final answer
    x = 323,788.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.