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Finding the Fourth Proportional to 92,421.34, 138,632.00 and 36,287.87

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Solution

The fourth proportional to 92,421.34, 138,632.00 and 36,287.87 is: 54,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,421.34 : 138,632.00 = 36,287.87 : x
  2. Step 2: Convert to fraction form
    92,421.34/138,632.00 = 36,287.87/x
  3. Step 3: Cross multiply
    92,421.34x = 138,632.00 × 36,287.87
  4. Step 4: Simplify right side
    92,421.34x = 5,030,659,119.24
  5. Step 5: Solve for x
    x = 5,030,659,119.24/92,421.34
  6. Step 6: Final answer
    x = 54,431.79

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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.