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Finding the Fourth Proportional to 45,968.66, 69,011.31 and 39,086.90

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Solution

The fourth proportional to 45,968.66, 69,011.31 and 39,086.90 is: 58,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,968.66 : 69,011.31 = 39,086.90 : x
  2. Step 2: Convert to fraction form
    45,968.66/69,011.31 = 39,086.90/x
  3. Step 3: Cross multiply
    45,968.66x = 69,011.31 × 39,086.90
  4. Step 4: Simplify right side
    45,968.66x = 2,697,438,172.84
  5. Step 5: Solve for x
    x = 2,697,438,172.84/45,968.66
  6. Step 6: Final answer
    x = 58,679.94

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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.