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Finding the Fourth Proportional to 355,411.20, 533,144.32 and 118,754.70

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Solution

The fourth proportional to 355,411.20, 533,144.32 and 118,754.70 is: 178,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,411.20 : 533,144.32 = 118,754.70 : x
  2. Step 2: Convert to fraction form
    355,411.20/533,144.32 = 118,754.70/x
  3. Step 3: Cross multiply
    355,411.20x = 533,144.32 × 118,754.70
  4. Step 4: Simplify right side
    355,411.20x = 63,313,393,778.30
  5. Step 5: Solve for x
    x = 63,313,393,778.30/355,411.20
  6. Step 6: Final answer
    x = 178,141.25

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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.