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Finding the Fourth Proportional to 60,390.87, 90,487.67 and 36,705.66

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Solution

The fourth proportional to 60,390.87, 90,487.67 and 36,705.66 is: 54,998.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,390.87 : 90,487.67 = 36,705.66 : x
  2. Step 2: Convert to fraction form
    60,390.87/90,487.67 = 36,705.66/x
  3. Step 3: Cross multiply
    60,390.87x = 90,487.67 × 36,705.66
  4. Step 4: Simplify right side
    60,390.87x = 3,321,409,465.68
  5. Step 5: Solve for x
    x = 3,321,409,465.68/60,390.87
  6. Step 6: Final answer
    x = 54,998.54

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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.