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Finding the Fourth Proportional to 14,535.64, 20,063.02 and 8,571.28

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Solution

The fourth proportional to 14,535.64, 20,063.02 and 8,571.28 is: 11,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,535.64 : 20,063.02 = 8,571.28 : x
  2. Step 2: Convert to fraction form
    14,535.64/20,063.02 = 8,571.28/x
  3. Step 3: Cross multiply
    14,535.64x = 20,063.02 × 8,571.28
  4. Step 4: Simplify right side
    14,535.64x = 171,965,762.07
  5. Step 5: Solve for x
    x = 171,965,762.07/14,535.64
  6. Step 6: Final answer
    x = 11,830.63

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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.