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Finding the Fourth Proportional to 94,391.76, 141,607.08 and 78,917.52

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Solution

The fourth proportional to 94,391.76, 141,607.08 and 78,917.52 is: 118,392.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,391.76 : 141,607.08 = 78,917.52 : x
  2. Step 2: Convert to fraction form
    94,391.76/141,607.08 = 78,917.52/x
  3. Step 3: Cross multiply
    94,391.76x = 141,607.08 × 78,917.52
  4. Step 4: Simplify right side
    94,391.76x = 11,175,279,568.04
  5. Step 5: Solve for x
    x = 11,175,279,568.04/94,391.76
  6. Step 6: Final answer
    x = 118,392.53

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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.