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Finding the Fourth Proportional to 76,618.99, 115,035.11 and 39,204.89

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Solution

The fourth proportional to 76,618.99, 115,035.11 and 39,204.89 is: 58,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,618.99 : 115,035.11 = 39,204.89 : x
  2. Step 2: Convert to fraction form
    76,618.99/115,035.11 = 39,204.89/x
  3. Step 3: Cross multiply
    76,618.99x = 115,035.11 × 39,204.89
  4. Step 4: Simplify right side
    76,618.99x = 4,509,938,833.69
  5. Step 5: Solve for x
    x = 4,509,938,833.69/76,618.99
  6. Step 6: Final answer
    x = 58,861.89

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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.