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Finding the Fourth Proportional to 14,619.71, 20,174.93 and 8,953.56

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Solution

The fourth proportional to 14,619.71, 20,174.93 and 8,953.56 is: 12,355.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,619.71 : 20,174.93 = 8,953.56 : x
  2. Step 2: Convert to fraction form
    14,619.71/20,174.93 = 8,953.56/x
  3. Step 3: Cross multiply
    14,619.71x = 20,174.93 × 8,953.56
  4. Step 4: Simplify right side
    14,619.71x = 180,637,446.25
  5. Step 5: Solve for x
    x = 180,637,446.25/14,619.71
  6. Step 6: Final answer
    x = 12,355.75

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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.