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Finding the Fourth Proportional to 13,592.45, 18,757.61 and 7,931.09

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Solution

The fourth proportional to 13,592.45, 18,757.61 and 7,931.09 is: 10,944.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,592.45 : 18,757.61 = 7,931.09 : x
  2. Step 2: Convert to fraction form
    13,592.45/18,757.61 = 7,931.09/x
  3. Step 3: Cross multiply
    13,592.45x = 18,757.61 × 7,931.09
  4. Step 4: Simplify right side
    13,592.45x = 148,768,159.65
  5. Step 5: Solve for x
    x = 148,768,159.65/13,592.45
  6. Step 6: Final answer
    x = 10,944.92

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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.