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Finding the Fourth Proportional to 88,958.70, 133,513.65 and 36,405.90

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Solution

The fourth proportional to 88,958.70, 133,513.65 and 36,405.90 is: 54,639.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,958.70 : 133,513.65 = 36,405.90 : x
  2. Step 2: Convert to fraction form
    88,958.70/133,513.65 = 36,405.90/x
  3. Step 3: Cross multiply
    88,958.70x = 133,513.65 × 36,405.90
  4. Step 4: Simplify right side
    88,958.70x = 4,860,684,590.54
  5. Step 5: Solve for x
    x = 4,860,684,590.54/88,958.70
  6. Step 6: Final answer
    x = 54,639.79

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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.