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Finding the Fourth Proportional to 397,173.66, 547,879.59 and 251,712.30

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Solution

The fourth proportional to 397,173.66, 547,879.59 and 251,712.30 is: 347,223.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,173.66 : 547,879.59 = 251,712.30 : x
  2. Step 2: Convert to fraction form
    397,173.66/547,879.59 = 251,712.30/x
  3. Step 3: Cross multiply
    397,173.66x = 547,879.59 × 251,712.30
  4. Step 4: Simplify right side
    397,173.66x = 137,908,031,721.96
  5. Step 5: Solve for x
    x = 137,908,031,721.96/397,173.66
  6. Step 6: Final answer
    x = 347,223.51

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1.5x scale

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.