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Finding the Fourth Proportional to 9,992.59, 13,789.78 and 5,516.35

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Solution

The fourth proportional to 9,992.59, 13,789.78 and 5,516.35 is: 7,612.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.59 : 13,789.78 = 5,516.35 : x
  2. Step 2: Convert to fraction form
    9,992.59/13,789.78 = 5,516.35/x
  3. Step 3: Cross multiply
    9,992.59x = 13,789.78 × 5,516.35
  4. Step 4: Simplify right side
    9,992.59x = 76,069,252.90
  5. Step 5: Solve for x
    x = 76,069,252.90/9,992.59
  6. Step 6: Final answer
    x = 7,612.57

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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.