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Finding the Fourth Proportional to 99,221.41, 136,927.09 and 53,900.29

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Solution

The fourth proportional to 99,221.41, 136,927.09 and 53,900.29 is: 74,383.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,221.41 : 136,927.09 = 53,900.29 : x
  2. Step 2: Convert to fraction form
    99,221.41/136,927.09 = 53,900.29/x
  3. Step 3: Cross multiply
    99,221.41x = 136,927.09 × 53,900.29
  4. Step 4: Simplify right side
    99,221.41x = 7,380,409,859.86
  5. Step 5: Solve for x
    x = 7,380,409,859.86/99,221.41
  6. Step 6: Final answer
    x = 74,383.24

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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.