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Finding the Fourth Proportional to 111,657.79, 154,094.64 and 63,910.05

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Solution

The fourth proportional to 111,657.79, 154,094.64 and 63,910.05 is: 88,199.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,657.79 : 154,094.64 = 63,910.05 : x
  2. Step 2: Convert to fraction form
    111,657.79/154,094.64 = 63,910.05/x
  3. Step 3: Cross multiply
    111,657.79x = 154,094.64 × 63,910.05
  4. Step 4: Simplify right side
    111,657.79x = 9,848,195,376.66
  5. Step 5: Solve for x
    x = 9,848,195,376.66/111,657.79
  6. Step 6: Final answer
    x = 88,199.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.