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Finding the Fourth Proportional to 117,078.80, 175,099.80 and 98,416.40

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Solution

The fourth proportional to 117,078.80, 175,099.80 and 98,416.40 is: 147,188.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,078.80 : 175,099.80 = 98,416.40 : x
  2. Step 2: Convert to fraction form
    117,078.80/175,099.80 = 98,416.40/x
  3. Step 3: Cross multiply
    117,078.80x = 175,099.80 × 98,416.40
  4. Step 4: Simplify right side
    117,078.80x = 17,232,691,956.72
  5. Step 5: Solve for x
    x = 17,232,691,956.72/117,078.80
  6. Step 6: Final answer
    x = 147,188.83

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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.