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Finding the Fourth Proportional to 119,487.72, 179,260.80 and 36,381.72

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Solution

The fourth proportional to 119,487.72, 179,260.80 and 36,381.72 is: 54,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,487.72 : 179,260.80 = 36,381.72 : x
  2. Step 2: Convert to fraction form
    119,487.72/179,260.80 = 36,381.72/x
  3. Step 3: Cross multiply
    119,487.72x = 179,260.80 × 36,381.72
  4. Step 4: Simplify right side
    119,487.72x = 6,521,816,232.58
  5. Step 5: Solve for x
    x = 6,521,816,232.58/119,487.72
  6. Step 6: Final answer
    x = 54,581.48

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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.