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Finding the Fourth Proportional to 383,246.16, 528,885.20 and 219,929.28

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Solution

The fourth proportional to 383,246.16, 528,885.20 and 219,929.28 is: 303,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,246.16 : 528,885.20 = 219,929.28 : x
  2. Step 2: Convert to fraction form
    383,246.16/528,885.20 = 219,929.28/x
  3. Step 3: Cross multiply
    383,246.16x = 528,885.20 × 219,929.28
  4. Step 4: Simplify right side
    383,246.16x = 116,317,341,238.66
  5. Step 5: Solve for x
    x = 116,317,341,238.66/383,246.16
  6. Step 6: Final answer
    x = 303,505.56

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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.