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Finding the Fourth Proportional to 14,649.75, 20,216.58 and 7,935.51

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Solution

The fourth proportional to 14,649.75, 20,216.58 and 7,935.51 is: 10,950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.75 : 20,216.58 = 7,935.51 : x
  2. Step 2: Convert to fraction form
    14,649.75/20,216.58 = 7,935.51/x
  3. Step 3: Cross multiply
    14,649.75x = 20,216.58 × 7,935.51
  4. Step 4: Simplify right side
    14,649.75x = 160,428,943.65
  5. Step 5: Solve for x
    x = 160,428,943.65/14,649.75
  6. Step 6: Final answer
    x = 10,950.96

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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.