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Finding the Fourth Proportional to 35,483.97, 53,161.35 and 20,647.91

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Solution

The fourth proportional to 35,483.97, 53,161.35 and 20,647.91 is: 30,934.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,483.97 : 53,161.35 = 20,647.91 : x
  2. Step 2: Convert to fraction form
    35,483.97/53,161.35 = 20,647.91/x
  3. Step 3: Cross multiply
    35,483.97x = 53,161.35 × 20,647.91
  4. Step 4: Simplify right side
    35,483.97x = 1,097,670,825.75
  5. Step 5: Solve for x
    x = 1,097,670,825.75/35,483.97
  6. Step 6: Final answer
    x = 30,934.27

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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.