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Finding the Fourth Proportional to 161,612.99, 242,433.30 and 49,318.46

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Solution

The fourth proportional to 161,612.99, 242,433.30 and 49,318.46 is: 73,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,612.99 : 242,433.30 = 49,318.46 : x
  2. Step 2: Convert to fraction form
    161,612.99/242,433.30 = 49,318.46/x
  3. Step 3: Cross multiply
    161,612.99x = 242,433.30 × 49,318.46
  4. Step 4: Simplify right side
    161,612.99x = 11,956,437,008.72
  5. Step 5: Solve for x
    x = 11,956,437,008.72/161,612.99
  6. Step 6: Final answer
    x = 73,981.91

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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.