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Finding the Fourth Proportional to 61,553.94, 85,087.92 and 54,905.46

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Solution

The fourth proportional to 61,553.94, 85,087.92 and 54,905.46 is: 75,897.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,553.94 : 85,087.92 = 54,905.46 : x
  2. Step 2: Convert to fraction form
    61,553.94/85,087.92 = 54,905.46/x
  3. Step 3: Cross multiply
    61,553.94x = 85,087.92 × 54,905.46
  4. Step 4: Simplify right side
    61,553.94x = 4,671,791,388.04
  5. Step 5: Solve for x
    x = 4,671,791,388.04/61,553.94
  6. Step 6: Final answer
    x = 75,897.52

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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.