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Finding the Fourth Proportional to 89,894.28, 124,004.34 and 63,076.80

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Solution

The fourth proportional to 89,894.28, 124,004.34 and 63,076.80 is: 87,011.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,894.28 : 124,004.34 = 63,076.80 : x
  2. Step 2: Convert to fraction form
    89,894.28/124,004.34 = 63,076.80/x
  3. Step 3: Cross multiply
    89,894.28x = 124,004.34 × 63,076.80
  4. Step 4: Simplify right side
    89,894.28x = 7,821,796,953.31
  5. Step 5: Solve for x
    x = 7,821,796,953.31/89,894.28
  6. Step 6: Final answer
    x = 87,011.06

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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.