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Finding the Fourth Proportional to 18,613.65, 27,927.99 and 11,953.55

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Solution

The fourth proportional to 18,613.65, 27,927.99 and 11,953.55 is: 17,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.65 : 27,927.99 = 11,953.55 : x
  2. Step 2: Convert to fraction form
    18,613.65/27,927.99 = 11,953.55/x
  3. Step 3: Cross multiply
    18,613.65x = 27,927.99 × 11,953.55
  4. Step 4: Simplify right side
    18,613.65x = 333,838,616.14
  5. Step 5: Solve for x
    x = 333,838,616.14/18,613.65
  6. Step 6: Final answer
    x = 17,935.15

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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.