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Finding the Fourth Proportional to 383,256.96, 528,910.95 and 213,491.16

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Solution

The fourth proportional to 383,256.96, 528,910.95 and 213,491.16 is: 294,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,256.96 : 528,910.95 = 213,491.16 : x
  2. Step 2: Convert to fraction form
    383,256.96/528,910.95 = 213,491.16/x
  3. Step 3: Cross multiply
    383,256.96x = 528,910.95 × 213,491.16
  4. Step 4: Simplify right side
    383,256.96x = 112,917,812,252.20
  5. Step 5: Solve for x
    x = 112,917,812,252.20/383,256.96
  6. Step 6: Final answer
    x = 294,626.91

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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.