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Finding the Fourth Proportional to 355,640.80, 532,597.20 and 189,061.60

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Solution

The fourth proportional to 355,640.80, 532,597.20 and 189,061.60 is: 283,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,640.80 : 532,597.20 = 189,061.60 : x
  2. Step 2: Convert to fraction form
    355,640.80/532,597.20 = 189,061.60/x
  3. Step 3: Cross multiply
    355,640.80x = 532,597.20 × 189,061.60
  4. Step 4: Simplify right side
    355,640.80x = 100,693,678,787.52
  5. Step 5: Solve for x
    x = 100,693,678,787.52/355,640.80
  6. Step 6: Final answer
    x = 283,133.09

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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.