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Finding the Fourth Proportional to 355,418.22, 533,154.81 and 118,761.72

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Solution

The fourth proportional to 355,418.22, 533,154.81 and 118,761.72 is: 178,151.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,418.22 : 533,154.81 = 118,761.72 : x
  2. Step 2: Convert to fraction form
    355,418.22/533,154.81 = 118,761.72/x
  3. Step 3: Cross multiply
    355,418.22x = 533,154.81 × 118,761.72
  4. Step 4: Simplify right side
    355,418.22x = 63,318,382,261.87
  5. Step 5: Solve for x
    x = 63,318,382,261.87/355,418.22
  6. Step 6: Final answer
    x = 178,151.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.