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Finding the Fourth Proportional to 117,958.53, 162,784.62 and 64,243.50

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Solution

The fourth proportional to 117,958.53, 162,784.62 and 64,243.50 is: 88,657.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,958.53 : 162,784.62 = 64,243.50 : x
  2. Step 2: Convert to fraction form
    117,958.53/162,784.62 = 64,243.50/x
  3. Step 3: Cross multiply
    117,958.53x = 162,784.62 × 64,243.50
  4. Step 4: Simplify right side
    117,958.53x = 10,457,853,734.97
  5. Step 5: Solve for x
    x = 10,457,853,734.97/117,958.53
  6. Step 6: Final answer
    x = 88,657.04

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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.