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Finding the Fourth Proportional to 85,251.48, 127,644.96 and 61,583.28

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Solution

The fourth proportional to 85,251.48, 127,644.96 and 61,583.28 is: 92,207.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,251.48 : 127,644.96 = 61,583.28 : x
  2. Step 2: Convert to fraction form
    85,251.48/127,644.96 = 61,583.28/x
  3. Step 3: Cross multiply
    85,251.48x = 127,644.96 × 61,583.28
  4. Step 4: Simplify right side
    85,251.48x = 7,860,795,312.27
  5. Step 5: Solve for x
    x = 7,860,795,312.27/85,251.48
  6. Step 6: Final answer
    x = 92,207.14

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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.