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Finding the Fourth Proportional to 99,218.56, 136,924.08 and 53,896.56

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Solution

The fourth proportional to 99,218.56, 136,924.08 and 53,896.56 is: 74,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,218.56 : 136,924.08 = 53,896.56 : x
  2. Step 2: Convert to fraction form
    99,218.56/136,924.08 = 53,896.56/x
  3. Step 3: Cross multiply
    99,218.56x = 136,924.08 × 53,896.56
  4. Step 4: Simplify right side
    99,218.56x = 7,379,736,893.16
  5. Step 5: Solve for x
    x = 7,379,736,893.16/99,218.56
  6. Step 6: Final answer
    x = 74,378.59

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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.