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Finding the Fourth Proportional to 99,199.89, 136,896.84 and 53,878.30

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Solution

The fourth proportional to 99,199.89, 136,896.84 and 53,878.30 is: 74,352.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,199.89 : 136,896.84 = 53,878.30 : x
  2. Step 2: Convert to fraction form
    99,199.89/136,896.84 = 53,878.30/x
  3. Step 3: Cross multiply
    99,199.89x = 136,896.84 × 53,878.30
  4. Step 4: Simplify right side
    99,199.89x = 7,375,769,014.57
  5. Step 5: Solve for x
    x = 7,375,769,014.57/99,199.89
  6. Step 6: Final answer
    x = 74,352.59

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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.