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Finding the Fourth Proportional to 14,611.65, 21,917.47 and 9,421.17

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Solution

The fourth proportional to 14,611.65, 21,917.47 and 9,421.17 is: 14,131.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,611.65 : 21,917.47 = 9,421.17 : x
  2. Step 2: Convert to fraction form
    14,611.65/21,917.47 = 9,421.17/x
  3. Step 3: Cross multiply
    14,611.65x = 21,917.47 × 9,421.17
  4. Step 4: Simplify right side
    14,611.65x = 206,488,210.84
  5. Step 5: Solve for x
    x = 206,488,210.84/14,611.65
  6. Step 6: Final answer
    x = 14,131.75

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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.