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Finding the Fourth Proportional to 76,609.89, 114,914.45 and 19,683.73

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Solution

The fourth proportional to 76,609.89, 114,914.45 and 19,683.73 is: 29,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,609.89 : 114,914.45 = 19,683.73 : x
  2. Step 2: Convert to fraction form
    76,609.89/114,914.45 = 19,683.73/x
  3. Step 3: Cross multiply
    76,609.89x = 114,914.45 × 19,683.73
  4. Step 4: Simplify right side
    76,609.89x = 2,261,945,199.75
  5. Step 5: Solve for x
    x = 2,261,945,199.75/76,609.89
  6. Step 6: Final answer
    x = 29,525.50

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Double scale
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1.5x scale

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.