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Finding the Fourth Proportional to 14,232.43, 19,642.71 and 7,945.21

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Solution

The fourth proportional to 14,232.43, 19,642.71 and 7,945.21 is: 10,965.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,232.43 : 19,642.71 = 7,945.21 : x
  2. Step 2: Convert to fraction form
    14,232.43/19,642.71 = 7,945.21/x
  3. Step 3: Cross multiply
    14,232.43x = 19,642.71 × 7,945.21
  4. Step 4: Simplify right side
    14,232.43x = 156,065,455.92
  5. Step 5: Solve for x
    x = 156,065,455.92/14,232.43
  6. Step 6: Final answer
    x = 10,965.48

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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.