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Finding the Fourth Proportional to 14,995.99, 20,642.55 and 13,433.65

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Solution

The fourth proportional to 14,995.99, 20,642.55 and 13,433.65 is: 18,491.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,995.99 : 20,642.55 = 13,433.65 : x
  2. Step 2: Convert to fraction form
    14,995.99/20,642.55 = 13,433.65/x
  3. Step 3: Cross multiply
    14,995.99x = 20,642.55 × 13,433.65
  4. Step 4: Simplify right side
    14,995.99x = 277,304,689.82
  5. Step 5: Solve for x
    x = 277,304,689.82/14,995.99
  6. Step 6: Final answer
    x = 18,491.93

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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.