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Finding the Fourth Proportional to 64,433.90, 96,660.03 and 20,065.12

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Solution

The fourth proportional to 64,433.90, 96,660.03 and 20,065.12 is: 30,100.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,433.90 : 96,660.03 = 20,065.12 : x
  2. Step 2: Convert to fraction form
    64,433.90/96,660.03 = 20,065.12/x
  3. Step 3: Cross multiply
    64,433.90x = 96,660.03 × 20,065.12
  4. Step 4: Simplify right side
    64,433.90x = 1,939,495,101.15
  5. Step 5: Solve for x
    x = 1,939,495,101.15/64,433.90
  6. Step 6: Final answer
    x = 30,100.54

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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.