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Finding the Fourth Proportional to 69,187.68, 103,906.80 and 63,631.08

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Solution

The fourth proportional to 69,187.68, 103,906.80 and 63,631.08 is: 95,561.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,187.68 : 103,906.80 = 63,631.08 : x
  2. Step 2: Convert to fraction form
    69,187.68/103,906.80 = 63,631.08/x
  3. Step 3: Cross multiply
    69,187.68x = 103,906.80 × 63,631.08
  4. Step 4: Simplify right side
    69,187.68x = 6,611,701,903.34
  5. Step 5: Solve for x
    x = 6,611,701,903.34/69,187.68
  6. Step 6: Final answer
    x = 95,561.84

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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.