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Finding the Fourth Proportional to 425,630.40, 587,396.40 and 234,643.44

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Solution

The fourth proportional to 425,630.40, 587,396.40 and 234,643.44 is: 323,822.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,630.40 : 587,396.40 = 234,643.44 : x
  2. Step 2: Convert to fraction form
    425,630.40/587,396.40 = 234,643.44/x
  3. Step 3: Cross multiply
    425,630.40x = 587,396.40 × 234,643.44
  4. Step 4: Simplify right side
    425,630.40x = 137,828,711,939.62
  5. Step 5: Solve for x
    x = 137,828,711,939.62/425,630.40
  6. Step 6: Final answer
    x = 323,822.53

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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.