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Finding the Fourth Proportional to 8,592.90, 11,855.50 and 4,815.56

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Solution

The fourth proportional to 8,592.90, 11,855.50 and 4,815.56 is: 6,643.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,592.90 : 11,855.50 = 4,815.56 : x
  2. Step 2: Convert to fraction form
    8,592.90/11,855.50 = 4,815.56/x
  3. Step 3: Cross multiply
    8,592.90x = 11,855.50 × 4,815.56
  4. Step 4: Simplify right side
    8,592.90x = 57,090,871.58
  5. Step 5: Solve for x
    x = 57,090,871.58/8,592.90
  6. Step 6: Final answer
    x = 6,643.96

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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.