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Finding the Fourth Proportional to 189,195.30, 261,196.30 and 125,620.02

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Solution

The fourth proportional to 189,195.30, 261,196.30 and 125,620.02 is: 173,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,195.30 : 261,196.30 = 125,620.02 : x
  2. Step 2: Convert to fraction form
    189,195.30/261,196.30 = 125,620.02/x
  3. Step 3: Cross multiply
    189,195.30x = 261,196.30 × 125,620.02
  4. Step 4: Simplify right side
    189,195.30x = 32,811,482,809.89
  5. Step 5: Solve for x
    x = 32,811,482,809.89/189,195.30
  6. Step 6: Final answer
    x = 173,426.53

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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.