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Finding the Fourth Proportional to 313,462.20, 469,415.70 and 251,254.20

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Solution

The fourth proportional to 313,462.20, 469,415.70 and 251,254.20 is: 376,258.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,462.20 : 469,415.70 = 251,254.20 : x
  2. Step 2: Convert to fraction form
    313,462.20/469,415.70 = 251,254.20/x
  3. Step 3: Cross multiply
    313,462.20x = 469,415.70 × 251,254.20
  4. Step 4: Simplify right side
    313,462.20x = 117,942,666,170.94
  5. Step 5: Solve for x
    x = 117,942,666,170.94/313,462.20
  6. Step 6: Final answer
    x = 376,258.02

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1.5x scale

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.