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Finding the Fourth Proportional to 118,925.88, 178,418.55 and 83,933.88

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Solution

The fourth proportional to 118,925.88, 178,418.55 and 83,933.88 is: 125,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,925.88 : 178,418.55 = 83,933.88 : x
  2. Step 2: Convert to fraction form
    118,925.88/178,418.55 = 83,933.88/x
  3. Step 3: Cross multiply
    118,925.88x = 178,418.55 × 83,933.88
  4. Step 4: Simplify right side
    118,925.88x = 14,975,361,165.47
  5. Step 5: Solve for x
    x = 14,975,361,165.47/118,925.88
  6. Step 6: Final answer
    x = 125,921.80

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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.