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Finding the Fourth Proportional to 89,473.68, 123,291.72 and 69,207.48

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Solution

The fourth proportional to 89,473.68, 123,291.72 and 69,207.48 is: 95,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,473.68 : 123,291.72 = 69,207.48 : x
  2. Step 2: Convert to fraction form
    89,473.68/123,291.72 = 69,207.48/x
  3. Step 3: Cross multiply
    89,473.68x = 123,291.72 × 69,207.48
  4. Step 4: Simplify right side
    89,473.68x = 8,532,709,246.07
  5. Step 5: Solve for x
    x = 8,532,709,246.07/89,473.68
  6. Step 6: Final answer
    x = 95,365.58

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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.