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Finding the Fourth Proportional to 99,216.47, 136,921.02 and 53,896.25

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Solution

The fourth proportional to 99,216.47, 136,921.02 and 53,896.25 is: 74,378.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,216.47 : 136,921.02 = 53,896.25 : x
  2. Step 2: Convert to fraction form
    99,216.47/136,921.02 = 53,896.25/x
  3. Step 3: Cross multiply
    99,216.47x = 136,921.02 × 53,896.25
  4. Step 4: Simplify right side
    99,216.47x = 7,379,529,524.18
  5. Step 5: Solve for x
    x = 7,379,529,524.18/99,216.47
  6. Step 6: Final answer
    x = 74,378.07

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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.