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Finding the Fourth Proportional to 425,034.72, 637,274.88 and 197,236.80

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Solution

The fourth proportional to 425,034.72, 637,274.88 and 197,236.80 is: 295,726.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,034.72 : 637,274.88 = 197,236.80 : x
  2. Step 2: Convert to fraction form
    425,034.72/637,274.88 = 197,236.80/x
  3. Step 3: Cross multiply
    425,034.72x = 637,274.88 × 197,236.80
  4. Step 4: Simplify right side
    425,034.72x = 125,694,058,051.58
  5. Step 5: Solve for x
    x = 125,694,058,051.58/425,034.72
  6. Step 6: Final answer
    x = 295,726.57

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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.