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Finding the Fourth Proportional to 118,124.91, 177,086.99 and 54,981.71

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Solution

The fourth proportional to 118,124.91, 177,086.99 and 54,981.71 is: 82,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,124.91 : 177,086.99 = 54,981.71 : x
  2. Step 2: Convert to fraction form
    118,124.91/177,086.99 = 54,981.71/x
  3. Step 3: Cross multiply
    118,124.91x = 177,086.99 × 54,981.71
  4. Step 4: Simplify right side
    118,124.91x = 9,736,544,368.61
  5. Step 5: Solve for x
    x = 9,736,544,368.61/118,124.91
  6. Step 6: Final answer
    x = 82,425.84

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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.