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Finding the Fourth Proportional to 61,921.64, 85,452.88 and 35,063.44

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Solution

The fourth proportional to 61,921.64, 85,452.88 and 35,063.44 is: 48,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,921.64 : 85,452.88 = 35,063.44 : x
  2. Step 2: Convert to fraction form
    61,921.64/85,452.88 = 35,063.44/x
  3. Step 3: Cross multiply
    61,921.64x = 85,452.88 × 35,063.44
  4. Step 4: Simplify right side
    61,921.64x = 2,996,271,930.71
  5. Step 5: Solve for x
    x = 2,996,271,930.71/61,921.64
  6. Step 6: Final answer
    x = 48,388.12

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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.