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Finding the Fourth Proportional to 35,483.96, 53,161.36 and 20,647.89

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Solution

The fourth proportional to 35,483.96, 53,161.36 and 20,647.89 is: 30,934.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,483.96 : 53,161.36 = 20,647.89 : x
  2. Step 2: Convert to fraction form
    35,483.96/53,161.36 = 20,647.89/x
  3. Step 3: Cross multiply
    35,483.96x = 53,161.36 × 20,647.89
  4. Step 4: Simplify right side
    35,483.96x = 1,097,669,861.91
  5. Step 5: Solve for x
    x = 1,097,669,861.91/35,483.96
  6. Step 6: Final answer
    x = 30,934.25

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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.