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Finding the Fourth Proportional to 92,421.92, 138,631.68 and 22,300.64

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Solution

The fourth proportional to 92,421.92, 138,631.68 and 22,300.64 is: 33,450.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,421.92 : 138,631.68 = 22,300.64 : x
  2. Step 2: Convert to fraction form
    92,421.92/138,631.68 = 22,300.64/x
  3. Step 3: Cross multiply
    92,421.92x = 138,631.68 × 22,300.64
  4. Step 4: Simplify right side
    92,421.92x = 3,091,575,188.28
  5. Step 5: Solve for x
    x = 3,091,575,188.28/92,421.92
  6. Step 6: Final answer
    x = 33,450.67

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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.