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Finding the Fourth Proportional to 118,761.40, 178,089.90 and 35,635.96

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Solution

The fourth proportional to 118,761.40, 178,089.90 and 35,635.96 is: 53,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,761.40 : 178,089.90 = 35,635.96 : x
  2. Step 2: Convert to fraction form
    118,761.40/178,089.90 = 35,635.96/x
  3. Step 3: Cross multiply
    118,761.40x = 178,089.90 × 35,635.96
  4. Step 4: Simplify right side
    118,761.40x = 6,346,404,552.80
  5. Step 5: Solve for x
    x = 6,346,404,552.80/118,761.40
  6. Step 6: Final answer
    x = 53,438.28

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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.