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Finding the Fourth Proportional to 118,225.82, 177,300.66 and 39,318.86

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Solution

The fourth proportional to 118,225.82, 177,300.66 and 39,318.86 is: 58,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,225.82 : 177,300.66 = 39,318.86 : x
  2. Step 2: Convert to fraction form
    118,225.82/177,300.66 = 39,318.86/x
  3. Step 3: Cross multiply
    118,225.82x = 177,300.66 × 39,318.86
  4. Step 4: Simplify right side
    118,225.82x = 6,971,259,828.45
  5. Step 5: Solve for x
    x = 6,971,259,828.45/118,225.82
  6. Step 6: Final answer
    x = 58,965.63

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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.