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Finding the Fourth Proportional to 425,617.98, 587,356.74 and 234,638.19

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Solution

The fourth proportional to 425,617.98, 587,356.74 and 234,638.19 is: 323,802.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,617.98 : 587,356.74 = 234,638.19 : x
  2. Step 2: Convert to fraction form
    425,617.98/587,356.74 = 234,638.19/x
  3. Step 3: Cross multiply
    425,617.98x = 587,356.74 × 234,638.19
  4. Step 4: Simplify right side
    425,617.98x = 137,816,322,357.90
  5. Step 5: Solve for x
    x = 137,816,322,357.90/425,617.98
  6. Step 6: Final answer
    x = 323,802.87

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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.