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Finding the Fourth Proportional to 86,896.70, 122,005.30 and 86,896.70

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Solution

The fourth proportional to 86,896.70, 122,005.30 and 86,896.70 is: 122,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,896.70 : 122,005.30 = 86,896.70 : x
  2. Step 2: Convert to fraction form
    86,896.70/122,005.30 = 86,896.70/x
  3. Step 3: Cross multiply
    86,896.70x = 122,005.30 × 86,896.70
  4. Step 4: Simplify right side
    86,896.70x = 10,601,857,952.51
  5. Step 5: Solve for x
    x = 10,601,857,952.51/86,896.70
  6. Step 6: Final answer
    x = 122,005.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.