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Finding the Fourth Proportional to 397,174.16, 547,880.28 and 251,712.80

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Solution

The fourth proportional to 397,174.16, 547,880.28 and 251,712.80 is: 347,224.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,174.16 : 547,880.28 = 251,712.80 : x
  2. Step 2: Convert to fraction form
    397,174.16/547,880.28 = 251,712.80/x
  3. Step 3: Cross multiply
    397,174.16x = 547,880.28 × 251,712.80
  4. Step 4: Simplify right side
    397,174.16x = 137,908,479,343.58
  5. Step 5: Solve for x
    x = 137,908,479,343.58/397,174.16
  6. Step 6: Final answer
    x = 347,224.20

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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.