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Finding the Fourth Proportional to 14,341.55, 21,509.07 and 5,453.71

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Solution

The fourth proportional to 14,341.55, 21,509.07 and 5,453.71 is: 8,179.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,341.55 : 21,509.07 = 5,453.71 : x
  2. Step 2: Convert to fraction form
    14,341.55/21,509.07 = 5,453.71/x
  3. Step 3: Cross multiply
    14,341.55x = 21,509.07 × 5,453.71
  4. Step 4: Simplify right side
    14,341.55x = 117,304,122.60
  5. Step 5: Solve for x
    x = 117,304,122.60/14,341.55
  6. Step 6: Final answer
    x = 8,179.32

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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.