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Finding the Fourth Proportional to 382,424.45, 527,856.99 and 255,099.74

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Solution

The fourth proportional to 382,424.45, 527,856.99 and 255,099.74 is: 352,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,424.45 : 527,856.99 = 255,099.74 : x
  2. Step 2: Convert to fraction form
    382,424.45/527,856.99 = 255,099.74/x
  3. Step 3: Cross multiply
    382,424.45x = 527,856.99 × 255,099.74
  4. Step 4: Simplify right side
    382,424.45x = 134,656,180,906.18
  5. Step 5: Solve for x
    x = 134,656,180,906.18/382,424.45
  6. Step 6: Final answer
    x = 352,111.85

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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.