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Finding the Fourth Proportional to 89,892.60, 124,076.46 and 52,179

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Solution

The fourth proportional to 89,892.60, 124,076.46 and 52,179 is: 72,021.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,892.60 : 124,076.46 = 52,179 : x
  2. Step 2: Convert to fraction form
    89,892.60/124,076.46 = 52,179/x
  3. Step 3: Cross multiply
    89,892.60x = 124,076.46 × 52,179
  4. Step 4: Simplify right side
    89,892.60x = 6,474,185,606.34
  5. Step 5: Solve for x
    x = 6,474,185,606.34/89,892.60
  6. Step 6: Final answer
    x = 72,021.34

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1.5x scale

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.