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Finding the Fourth Proportional to 135,062.80, 202,464.60 and 105,060.40

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Solution

The fourth proportional to 135,062.80, 202,464.60 and 105,060.40 is: 157,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,062.80 : 202,464.60 = 105,060.40 : x
  2. Step 2: Convert to fraction form
    135,062.80/202,464.60 = 105,060.40/x
  3. Step 3: Cross multiply
    135,062.80x = 202,464.60 × 105,060.40
  4. Step 4: Simplify right side
    135,062.80x = 21,271,011,861.84
  5. Step 5: Solve for x
    x = 21,271,011,861.84/135,062.80
  6. Step 6: Final answer
    x = 157,489.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.