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Finding the Fourth Proportional to 86,786.40, 119,750.40 and 49,059.84

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Solution

The fourth proportional to 86,786.40, 119,750.40 and 49,059.84 is: 67,694.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,786.40 : 119,750.40 = 49,059.84 : x
  2. Step 2: Convert to fraction form
    86,786.40/119,750.40 = 49,059.84/x
  3. Step 3: Cross multiply
    86,786.40x = 119,750.40 × 49,059.84
  4. Step 4: Simplify right side
    86,786.40x = 5,874,935,463.94
  5. Step 5: Solve for x
    x = 5,874,935,463.94/86,786.40
  6. Step 6: Final answer
    x = 67,694.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.