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Finding the Fourth Proportional to 64,676.16, 89,247.96 and 36,386.64

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Solution

The fourth proportional to 64,676.16, 89,247.96 and 36,386.64 is: 50,210.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,676.16 : 89,247.96 = 36,386.64 : x
  2. Step 2: Convert to fraction form
    64,676.16/89,247.96 = 36,386.64/x
  3. Step 3: Cross multiply
    64,676.16x = 89,247.96 × 36,386.64
  4. Step 4: Simplify right side
    64,676.16x = 3,247,433,391.25
  5. Step 5: Solve for x
    x = 3,247,433,391.25/64,676.16
  6. Step 6: Final answer
    x = 50,210.67

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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.