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Finding the Fourth Proportional to 383,161.92, 528,776.64 and 222,017.28

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Solution

The fourth proportional to 383,161.92, 528,776.64 and 222,017.28 is: 306,391.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,161.92 : 528,776.64 = 222,017.28 : x
  2. Step 2: Convert to fraction form
    383,161.92/528,776.64 = 222,017.28/x
  3. Step 3: Cross multiply
    383,161.92x = 528,776.64 × 222,017.28
  4. Step 4: Simplify right side
    383,161.92x = 117,397,551,340.34
  5. Step 5: Solve for x
    x = 117,397,551,340.34/383,161.92
  6. Step 6: Final answer
    x = 306,391.49

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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.