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Finding the Fourth Proportional to 8,688.88, 11,992.26 and 4,962.88

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Solution

The fourth proportional to 8,688.88, 11,992.26 and 4,962.88 is: 6,849.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.88 : 11,992.26 = 4,962.88 : x
  2. Step 2: Convert to fraction form
    8,688.88/11,992.26 = 4,962.88/x
  3. Step 3: Cross multiply
    8,688.88x = 11,992.26 × 4,962.88
  4. Step 4: Simplify right side
    8,688.88x = 59,516,147.31
  5. Step 5: Solve for x
    x = 59,516,147.31/8,688.88
  6. Step 6: Final answer
    x = 6,849.69

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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.