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Finding the Fourth Proportional to 89,291.74, 133,958.07 and 38,699.26

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Solution

The fourth proportional to 89,291.74, 133,958.07 and 38,699.26 is: 58,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,291.74 : 133,958.07 = 38,699.26 : x
  2. Step 2: Convert to fraction form
    89,291.74/133,958.07 = 38,699.26/x
  3. Step 3: Cross multiply
    89,291.74x = 133,958.07 × 38,699.26
  4. Step 4: Simplify right side
    89,291.74x = 5,184,077,316.74
  5. Step 5: Solve for x
    x = 5,184,077,316.74/89,291.74
  6. Step 6: Final answer
    x = 58,057.75

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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.