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Finding the Fourth Proportional to 89,242.64, 123,156 and 48,953.80

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Solution

The fourth proportional to 89,242.64, 123,156 and 48,953.80 is: 67,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,242.64 : 123,156 = 48,953.80 : x
  2. Step 2: Convert to fraction form
    89,242.64/123,156 = 48,953.80/x
  3. Step 3: Cross multiply
    89,242.64x = 123,156 × 48,953.80
  4. Step 4: Simplify right side
    89,242.64x = 6,028,954,192.80
  5. Step 5: Solve for x
    x = 6,028,954,192.80/89,242.64
  6. Step 6: Final answer
    x = 67,556.88

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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.