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Finding the Fourth Proportional to 262,112.99, 393,169.89 and 112,341.56

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Solution

The fourth proportional to 262,112.99, 393,169.89 and 112,341.56 is: 168,512.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,112.99 : 393,169.89 = 112,341.56 : x
  2. Step 2: Convert to fraction form
    262,112.99/393,169.89 = 112,341.56/x
  3. Step 3: Cross multiply
    262,112.99x = 393,169.89 × 112,341.56
  4. Step 4: Simplify right side
    262,112.99x = 44,169,318,787.63
  5. Step 5: Solve for x
    x = 44,169,318,787.63/262,112.99
  6. Step 6: Final answer
    x = 168,512.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.