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Finding the Fourth Proportional to 13,516.92, 18,643.80 and 7,927.92

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Solution

The fourth proportional to 13,516.92, 18,643.80 and 7,927.92 is: 10,934.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.92 : 18,643.80 = 7,927.92 : x
  2. Step 2: Convert to fraction form
    13,516.92/18,643.80 = 7,927.92/x
  3. Step 3: Cross multiply
    13,516.92x = 18,643.80 × 7,927.92
  4. Step 4: Simplify right side
    13,516.92x = 147,806,554.90
  5. Step 5: Solve for x
    x = 147,806,554.90/13,516.92
  6. Step 6: Final answer
    x = 10,934.93

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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.