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Finding the Fourth Proportional to 159,191.43, 219,774.87 and 105,548.97

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Solution

The fourth proportional to 159,191.43, 219,774.87 and 105,548.97 is: 145,717.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,191.43 : 219,774.87 = 105,548.97 : x
  2. Step 2: Convert to fraction form
    159,191.43/219,774.87 = 105,548.97/x
  3. Step 3: Cross multiply
    159,191.43x = 219,774.87 × 105,548.97
  4. Step 4: Simplify right side
    159,191.43x = 23,197,011,984.54
  5. Step 5: Solve for x
    x = 23,197,011,984.54/159,191.43
  6. Step 6: Final answer
    x = 145,717.72

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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.