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Finding the Fourth Proportional to 89,809.79, 123,934.65 and 49,525.25

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Solution

The fourth proportional to 89,809.79, 123,934.65 and 49,525.25 is: 68,343.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,809.79 : 123,934.65 = 49,525.25 : x
  2. Step 2: Convert to fraction form
    89,809.79/123,934.65 = 49,525.25/x
  3. Step 3: Cross multiply
    89,809.79x = 123,934.65 × 49,525.25
  4. Step 4: Simplify right side
    89,809.79x = 6,137,893,905.24
  5. Step 5: Solve for x
    x = 6,137,893,905.24/89,809.79
  6. Step 6: Final answer
    x = 68,343.26

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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.