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Finding the Fourth Proportional to 14,407.81, 21,601.21 and 9,716.16

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Solution

The fourth proportional to 14,407.81, 21,601.21 and 9,716.16 is: 14,567.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,407.81 : 21,601.21 = 9,716.16 : x
  2. Step 2: Convert to fraction form
    14,407.81/21,601.21 = 9,716.16/x
  3. Step 3: Cross multiply
    14,407.81x = 21,601.21 × 9,716.16
  4. Step 4: Simplify right side
    14,407.81x = 209,880,824.70
  5. Step 5: Solve for x
    x = 209,880,824.70/14,407.81
  6. Step 6: Final answer
    x = 14,567.16

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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.