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Finding the Fourth Proportional to 392,177.58, 541,205.08 and 222,411.72

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Solution

The fourth proportional to 392,177.58, 541,205.08 and 222,411.72 is: 306,928.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,177.58 : 541,205.08 = 222,411.72 : x
  2. Step 2: Convert to fraction form
    392,177.58/541,205.08 = 222,411.72/x
  3. Step 3: Cross multiply
    392,177.58x = 541,205.08 × 222,411.72
  4. Step 4: Simplify right side
    392,177.58x = 120,370,352,715.54
  5. Step 5: Solve for x
    x = 120,370,352,715.54/392,177.58
  6. Step 6: Final answer
    x = 306,928.18

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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.