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Finding the Fourth Proportional to 329,385.22, 454,555.18 and 193,420.78

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Solution

The fourth proportional to 329,385.22, 454,555.18 and 193,420.78 is: 266,922.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,385.22 : 454,555.18 = 193,420.78 : x
  2. Step 2: Convert to fraction form
    329,385.22/454,555.18 = 193,420.78/x
  3. Step 3: Cross multiply
    329,385.22x = 454,555.18 × 193,420.78
  4. Step 4: Simplify right side
    329,385.22x = 87,920,417,468.64
  5. Step 5: Solve for x
    x = 87,920,417,468.64/329,385.22
  6. Step 6: Final answer
    x = 266,922.78

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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.