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Finding the Fourth Proportional to 8,811.18, 12,159.42 and 4,832.31

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Solution

The fourth proportional to 8,811.18, 12,159.42 and 4,832.31 is: 6,668.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.18 : 12,159.42 = 4,832.31 : x
  2. Step 2: Convert to fraction form
    8,811.18/12,159.42 = 4,832.31/x
  3. Step 3: Cross multiply
    8,811.18x = 12,159.42 × 4,832.31
  4. Step 4: Simplify right side
    8,811.18x = 58,758,045.94
  5. Step 5: Solve for x
    x = 58,758,045.94/8,811.18
  6. Step 6: Final answer
    x = 6,668.58

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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.