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Finding the Fourth Proportional to 113,618.46, 157,076.92 and 85,274.94

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Solution

The fourth proportional to 113,618.46, 157,076.92 and 85,274.94 is: 117,892.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,618.46 : 157,076.92 = 85,274.94 : x
  2. Step 2: Convert to fraction form
    113,618.46/157,076.92 = 85,274.94/x
  3. Step 3: Cross multiply
    113,618.46x = 157,076.92 × 85,274.94
  4. Step 4: Simplify right side
    113,618.46x = 13,394,724,928.38
  5. Step 5: Solve for x
    x = 13,394,724,928.38/113,618.46
  6. Step 6: Final answer
    x = 117,892.15

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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.