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Finding the Fourth Proportional to 61,719.60, 85,172.72 and 33,425.04

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Solution

The fourth proportional to 61,719.60, 85,172.72 and 33,425.04 is: 46,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,719.60 : 85,172.72 = 33,425.04 : x
  2. Step 2: Convert to fraction form
    61,719.60/85,172.72 = 33,425.04/x
  3. Step 3: Cross multiply
    61,719.60x = 85,172.72 × 33,425.04
  4. Step 4: Simplify right side
    61,719.60x = 2,846,901,572.91
  5. Step 5: Solve for x
    x = 2,846,901,572.91/61,719.60
  6. Step 6: Final answer
    x = 46,126.38

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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.