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Finding the Fourth Proportional to 225,219.84, 337,920 and 85,018.24

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Solution

The fourth proportional to 225,219.84, 337,920 and 85,018.24 is: 127,561.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,219.84 : 337,920 = 85,018.24 : x
  2. Step 2: Convert to fraction form
    225,219.84/337,920 = 85,018.24/x
  3. Step 3: Cross multiply
    225,219.84x = 337,920 × 85,018.24
  4. Step 4: Simplify right side
    225,219.84x = 28,729,363,660.80
  5. Step 5: Solve for x
    x = 28,729,363,660.80/225,219.84
  6. Step 6: Final answer
    x = 127,561.42

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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.