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Finding the Fourth Proportional to 191,849.43, 287,527.87 and 91,859.79

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Solution

The fourth proportional to 191,849.43, 287,527.87 and 91,859.79 is: 137,671.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,849.43 : 287,527.87 = 91,859.79 : x
  2. Step 2: Convert to fraction form
    191,849.43/287,527.87 = 91,859.79/x
  3. Step 3: Cross multiply
    191,849.43x = 287,527.87 × 91,859.79
  4. Step 4: Simplify right side
    191,849.43x = 26,412,249,757.35
  5. Step 5: Solve for x
    x = 26,412,249,757.35/191,849.43
  6. Step 6: Final answer
    x = 137,671.77

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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.