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Finding the Fourth Proportional to 89,496.40, 123,495.40 and 51,763.28

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Solution

The fourth proportional to 89,496.40, 123,495.40 and 51,763.28 is: 71,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,496.40 : 123,495.40 = 51,763.28 : x
  2. Step 2: Convert to fraction form
    89,496.40/123,495.40 = 51,763.28/x
  3. Step 3: Cross multiply
    89,496.40x = 123,495.40 × 51,763.28
  4. Step 4: Simplify right side
    89,496.40x = 6,392,526,968.91
  5. Step 5: Solve for x
    x = 6,392,526,968.91/89,496.40
  6. Step 6: Final answer
    x = 71,427.76

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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.