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Finding the Fourth Proportional to 84,672.38, 116,580.38 and 74,563.58

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Solution

The fourth proportional to 84,672.38, 116,580.38 and 74,563.58 is: 102,662.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,672.38 : 116,580.38 = 74,563.58 : x
  2. Step 2: Convert to fraction form
    84,672.38/116,580.38 = 74,563.58/x
  3. Step 3: Cross multiply
    84,672.38x = 116,580.38 × 74,563.58
  4. Step 4: Simplify right side
    84,672.38x = 8,692,650,490.56
  5. Step 5: Solve for x
    x = 8,692,650,490.56/84,672.38
  6. Step 6: Final answer
    x = 102,662.17

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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.