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Finding the Fourth Proportional to 383,420.54, 529,401.84 and 247,533.68

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Solution

The fourth proportional to 383,420.54, 529,401.84 and 247,533.68 is: 341,778.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,420.54 : 529,401.84 = 247,533.68 : x
  2. Step 2: Convert to fraction form
    383,420.54/529,401.84 = 247,533.68/x
  3. Step 3: Cross multiply
    383,420.54x = 529,401.84 × 247,533.68
  4. Step 4: Simplify right side
    383,420.54x = 131,044,785,653.97
  5. Step 5: Solve for x
    x = 131,044,785,653.97/383,420.54
  6. Step 6: Final answer
    x = 341,778.21

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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.